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The 9th International Symposium on Ultrafast Phenomena and Terahertz Waves (23-26 April,2018 Changsha, China) Conference Book

Website and Wechat public account: National University of Defense Technology Honorary Chair: Zejin Liu, National University of Defense Technology, China

General Chair: Zengxiu Zhao, National University of Defense Technology, China

Co-chairs: Xi-Cheng Zhang, University of Rochester, USA Qihuang Gong, Peking University, China LOCAL ORGANIZING COMMITTEE:

Chair: CONTENTS: Zengxiu Zhao Welcome to ISUPTW2018∙∙∙∙∙∙∙∙∙∙∙∙1 Members: Jiayu Dai Committees∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙5 Dongwen Zhang General Information∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙7 Zhihui Lyu Daily Schedule∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙11 Xiaowei Wang Jing Zhao Plenary Presentations∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙13 Xiao Cheng Full Technical Program∙∙∙∙∙∙∙∙∙∙∙∙∙∙22 Xiaojun Wu Author Index∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙67 Xiaoyu Peng Beibei He Sponsors∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙76 Lihui Xie

We gratefully acknowledge the considerable time and eﬀort invested by many individuals and organizations in planning for, and running this conference. WELCOME TO ISUPTW 2018

Welcome to the 9th International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2018). ISUPTW, an international symposium, is devoted to strengthening the collaboration among worldwide researchers and promoting the development in ultrafast and terahertz science and technology. The biennial symposium, initiated in 2002, has been held in Beijing, Shanghai, Nanjing, Tianjin, Xi'an, Wuhan, Shanghai and Chongqing. It brings together scientists, technologists, and students from more than 10 countries and typically hosts 150-300 participants.

This year, the conference will be held in Changsha from 23rd to 26th April at Empark Grand Hotel Changsha, organized by National University of Defense Technology (NUDT) and Optical Society of America (OSA). We received 190 abstracts from 13 countries and pushed our technical program to work hard to complete the peer review response on time. We thank all committees for their suggestions and recommendations and all reviews for their good work. We hope you will enjoy the technical program of this conference; we have numerous exciting talks lined up as well as exhibits by many of the active companies in the field.

We would also like to invite you to enjoy and explore Changsha’s unique cultural characters and beautiful cityscape.

Situated in the river valley along the lower reaches of the Xiang River, Changsha is the capital city of Hunan Province. The recorded history of Changsha can be traced back 3,000 years. Tomb relics from the primitive periods witnessing the earliest human activities have been discovered in this region. During the Spring 1 and Autumn Period (770 B.C. - 476 B.C.), the area developed into an important town within the State of Chu, (one of the seven warring states that existed before China's unification by Emperor Qin). After Emperor Qin (the first feudal emperor in China's history) unified the country, the town was set up as a county and later became the capital city of a state in the early Han Dynasty (206 B.C. - 220). The tomb excavation site of Mawangdui found in the eastern suburb of the city is a family graveyard from that period. The most fantastic historical relic should be the well-preserved mummified remains of a Western Han Dynasty woman excavated from the tombs. Some of thousands of relics unearthed include silk products, paintings, lacquer works, potteries, bamboo slips used for writing, weapons and herbs, all of which are exhibited in Hunan Provincial Museum.

In the dynasties that followed, the city experienced several expansions and during China's Qing Dynasty (1644-1911), it has developed into the political, economic and cultural center of Hunan Province.

Although not as ancient a capital city as Beijing, Nanjing or Xian, Changsha also has rich historical heritages including old wall remains, tomb sites, religious temples and buildings. What earns the city its reputation among tourists are two things. One is a great man in China's recent history, Chairman Mao Zedong and the other is Yuelu Academy, a time-honored academic school perched on the scenic Yuelu Mountain. Originally built in 976 during the Song Dynasty, the academy school survived through the Yuan, Ming and Qing dynasties and is considered to be the cradle of Huxiang Culture. (simply means the culture school in Hunan Province)

The village of Shaoshan, about 130 kilometers south-west of Changsha is the hometown of Chairman Mao Zedong. Today, the village has become a memorial place for Chinese people to remember this extraordinary man. People erected a statue of the Chairman and have preserved the houses he lived as a tourist site. A museum and other memorial spots in the scenic area create a kind of solemn atmosphere. Many Chinese come to pay respect and visit here during the memorial days.

In addition, the city was home to other revolutionary leaders including Liu Shaoqi, Huyaobang and former Chinese prime minister, Zhu Rongji. Therefore, it acts as a good place to learn more about China's recent history.

Changsha people boast to be the best gourmand of China and here people spend a lot of time eating. Xiang Cuisine is one of the Eight Cuisines in China and has a fine and delicate appearance and

a hot & sour taste and the heavy and hot taste is an equal competitor to the spicy food of Sichuan. Street dining and restaurants in the city make every visitor's mouth hot. No matter the featured snacks - 'Stinky Tofu' and 'Sisters'Rice

Balls' in Huogongdian (Fire Palace) or the famous spicy shrimps at Nanmenkou, the many types of delicious local food will not disappoint any guests.

Changsha people are also renowned for their acting and have created various traditional folk art performances of their own including the local operas, storytelling, drum opera, acrobatics and other dramatic styles. Everyone can feel their hospitalities and enthusiasm by their vigorous dances. Today, most of the entertainment houses in the city present dynamic and entertaining performances featuring a blend of the traditional essence and the modern flare. The neon lights of KTV squares, disco parlors, clubs and dancing squares illuminate the city at night. Dotted with all sorts of bars and pubs, Jiefang Xilu, although not as prosperous as Sanlitun Pub Street in Beijing, has its own styles. Romantic and quiet bars, dynamic show bars, teahouses, western style restaurants...People of all ages can find their ideal place to spend their leisure time.

Welcome to ISUPTW 2018. May you have a fantastic time in Changsha!

The ISUPTW 2018 Committees

Honorary Chair: Zejin Liu, National University of Defense Technology, China

General Chair: Zengxiu Zhao, National University of Defense Technology, China

Co-chairs: Xi-Cheng Zhang, University of Rochester, USA Qihuang Gong, Peking University, China

International Committee: 1. Enrique Castro Camus, Centro de Investigaciones en Optica A.C., Mexico 2. Zenghu Chang, University of Central Florida, USA 3. Dajun Ding, Jilin University, China 4. Dianyuan Fan, Shenzhen University, China 5. Aaron Lindenberg, Stanford University, USA 6. Sergei Kozlov, ITMO University, Russia 7. Emma Pickwell-Macpherson, Warwick University, UK 8. Harald Schneider, Helmholtz-Zentrum Dresden-Rossendorf, Germany 9. Xuechu Shen, Shanghai Institute of Technical Physics, CAS, China 10. Zhengming Sheng, Shanghai Jiaotong University, China & University of Strathclyde, UK 11. Alexander Shkurinov, Lomonosov Moscow State University, Russia 12. Masayoshi Tonouchi, Osaka University, Japan 13. Zhiyi Wei, Institute of Physics, CAS, China 14. Peiheng Wu, Nanjing University, China 15. Yirong Wu, The Institute of Electronics, CAS, China 16. Jianquan Yao, Tianjin University, China 17. Jianmin Yuan, National University of Defense Technology, China 18. Chao Zhang, University of Wollongong, Australia 19. Weili Zhang, Tianjin University, China 20. Xi-Cheng Zhang, University of Rochester, USA 21. Songlin Zhuang, University of Shanghai for Science and Technology, China

Technical Program Committee: 1. Juncheng Cao, Shanghai Institute of Microsystem and Information Technology 2. Chao Chang, Xian Jiaotong University,China 3. Hou-Tong Chen, Los Alamos National Laboratory, USA 4. Jian Chen, Nanjing University 5. Jing Chen, Beijing Institute of Applied Physics and Computational Mathematics 6. Ya Cheng, East China Normal University, China 7. Hongliang Cui, Chongqing Institute of Green and Intelligent Technology 8. Tiejun Cui, Southeast University, China 9. Jianmin Dai, Tianjin University, China 10. Wenhui Fan, Xi’an Institute of Optics and Precision Mechanics, CAS, China 11. Christoph P. Hauri, Paul Scherrer Institute, Switzerland 12. Jing Hou, National University of Defense Technology, China 13. Biaobing Jin, Nanjing University, China 14. Kiyong Kim, Maryland University (College Park), USA 15. Kyung Taec Kim, Gwangju Institute of Science & Technology (GIST) 16. Yutong Li, Institute of Physics, CAS, China 17. Jiansheng Liu, Shanghai Institute of Optics and Fine Mechanics, CAS, China 18. Weiwei Liu, Nankai University, China 19. Xiaojun Liu, Wuhan Institute of Physics and Mathematics, China 20. Yunquan Liu, Peking University, China 21. Peixiang Lu, Huazhong University of Science and Technology, China 22. Shengcai Shi, Purple Mountain Observatory, CAS, China 23. Wei Shi, Xi’an University of Technology, China 24. Hongqiang Wang, National University of Defense Technology, China 25. Li Wang, Institute of Physics, CAS, China 26. Heping Zeng, East China Normal University, China 27. Cunlin Zhang, Capital Normal University, China 28. Dongwen Zhang, National University of Defense Technology, China 29. Yaxin Zhang, University of Electronic Science and Technology of China, China 30. Yiming Zhu, University of Shanghai for Science and Technology, China

General Information

Conference Venue ISUPTW 2018 is held at Empark Grand Hotel Changsha No. 199 Jintai Road, Kaifu District, Changsha, 410008, P.R. China Tel: (86) 731 8595 8888 Accessibility Located in the north of Changsha within the close proximity to some of Changsha's major historic spots, Empark Grand Hotel sits beside the intersection of Xiangjiang River and Liuyang River. It is only a 45-minute drive from the Changsha Huanghua airport (31km) to the hotel, a 40-minute drive from Changsha South Railway Station (21km) to the hotel. Onsite Registration The registrants have the access to all conference sessions, plenaries, poster sessions and exhibition, coffee breaks, three-day lunches (23 April and 26 April), welcome reception, conference banquet and awards ceremony, conference program, internet wireless access, etc. Hours and Places: 14:00-20:00 Monday, 23 April Lobby of 1st floor, Empark Grand Hotel 08:30-17:30 Tuesday, 24 April Lobby of 1st floor, Empark Grand Hotel 08:30-17:30 Wednesday, 25 April Lobby of 1st floor, Empark Grand Hotel 08:30-11:00 Thursday, 26 April Lobby of 1st floor, Empark Grand Hotel Speaker Preparation All meeting rooms will have a laptop for giving presentations. All presenters are requested to copy your work to the laptop at least ten minutes prior to the session of your talk and confirm the display settings with the audiovisual equipment being used at the session. No shows of the oral presentation will be reported to conference management and these papers will not be published. Poster Preparation THz poster session is scheduled at 17:10 - 18:30, 24 April and 17:15 - 18:30, 25 April. The poster sessions of ultrafast phenomena are located in Room 2 and THz waves in Room 3, respectively. Presenters should display the paper title and authors and affiliations on their posters of 90 cm (width) x 120 cm (height). Authors should remain in the vicinity of the bulletin board for the duration of the session to answer questions. Please note that poster papers are not supplied with electricity or audiovisual equipment. Set-up/Tear-down As a general rule, presenters should plan on posting their papers at least 1 hour prior to the poster session and tearing down their papers within 30 minutes after the conclusion of the session. 7

Only papers that are presented at the conference will be published. Any "no-shows" will be considered withdrawn from the conference and not included in the archival publication.

Exhibition The ISUPTW 2018 Exhibitiopn is open to all attendees. Location: Public area, 1st Floor, Empark Grand Hotel 09:00-18:00 Tuesday, 24 April 1st floor, Empark Grand Hotel 08:30-18:00 Wednesday, 25 April 1st floor, Empark Grand Hotel 08:30-11:30 Thrusday, 26 April 1st floor, Empark Grand Hotel Map

Group Photo The west parking lot of the Empark Grand Hotel after the plenary session on the morning of 24, April, 2018.

Best Student Paper Award Student paper competition is limited to full time students. To win the prize, the author must be the first author and the presenter of either oral or poster presentation, which will be evaluated by Program Committee Members, based on not only the submitted abstract content, but also the quality of the presentation. The winners will be announced and awarded certificates with prize in cash (RMB ￥1500/recipient) at conference banquet and awards ceremony on 25 April. Sponsored by

Meals Lunches 23 April 11:30-13:30, Golden Centuby Chinese Restaurant, 1st floor, Empark Grand Hotel 24 April 12:00-13:30, Golden Centuby Chinese Restaurant, 2nd floor, Empark Grand Hotel 25 Arpil 12:00-13:30, Golden Centuby Chinese Restaurant, 2nd floor, Empark Grand Hotel 26 Arpil 12:00-13:30, Golden Centuby Chinese Restaurant, 2nd floor, Empark Grand Hotel Dinners 24 April 18:30-20:00, Golden Centuby Chinese Restaurant, 2nd floor, Empark Grand Hotel Welcome Reception 23 April 18:00-20:00 Golden Centuby Chinese Restaurant, 2nd floor, Empark Grand Hotel Conference banquet and awards ceremony: 25 April, 18:30-20:00, the West Lake Floor (the largest restaurant in Asian) Waiting for the bus after the poster session in the platform before the hotel gate at 18:30 of 25 April.

Wifi Connection Guide 1. Select the Wi-Fi network named Empark grand hotel 2. No password

Daily Schedule

Tuesday, 24 April, 2018 08:30 AM 08:50 AM Opening Ceremony (Room 1) 08:50 AM 10:20 AM TuA • Plenary Session I (Room 1) 10:20 AM 10:50 AM Coffee Break and Take Photos 10:50 AM 12:00 PM TuB • Extreme Terahertz Science and Technology I (Room 1) 10:50 AM 12:00 PM TuC • Novel Terahertz Detectors (Room 3) 10:50 AM 12:00 PM TuD • Ultrafast Phenomena in Micro and Nano-Structures (Room 2) 01:30 PM 03:20 PM TuE • Extreme Terahertz Science and Technology II (Room 1) 01:30 PM 03:20 PM TuF • Terahertz in Biomedical Systems (Room 3) 01:30 PM 03:20 PM TuG • High-Field Physics and Attosecond Science I (Room 2) 03:40 PM 05:10 PM TuH • Terahertz Spectroscopy and Imaging I (Room 1) 03:40 PM 05:10 PM TuI • Terahertz Science and Technology in Micro and Nano-Structures I (Room 3) 03:40 PM 05:10 PM TuJ • High-Field Physics and Attosecond Science II (Room 2) 05:10 PM 06:30 PM TuK • Poster Session I (Ultrafast in Room 2 and THz in Room 3) Wednesday, 25 April, 2018 08:30 AM 10:00 AM WA • Plenary Session II (Room 1) 10:20 AM 12:00 PM WB • Terahertz Application (Room 1) 10:20 AM 12:00 PM WC • Terahertz Science and Technology in Micro and Nano-Structures II (Room 3) 10:20 AM 12:00 PM WD • High-Field Physics and Attosecond Science III (Room 2) 01:30 PM 03:00 PM WE • Plenary Session III (Ball Room 1) 03:20 PM 05:00 PM WF • Terahertz QCL (Room 1) 03:20 PM 05:00 PM WG • Terahertz Science and Technology in Micro and Nano-Structures III (Room 3) 03:20 PM 05:00 PM WH • Ultrahigh Intensity Laser and Its Application (Room 2) 05:15 PM 06:30 PM WI • Poster Session II (Ultrafast in Room 2 and THz in Room 3) Thursday, 26 April, 2018 08:30 AM 10:00 AM ThA • Plenary Session IV (Room 1) 10:20 AM 12:00 PM ThB • Terahertz Spectroscopy and Imaging II (Room 1) 10:20 AM 12:00 PM ThC • Terahertz Science and Technology in Micro and Nano-Structures IV (Rm 3) 10:20 AM 12:00 PM ThD • Terahertz Spectroscopy and Imaging III (Room 2)

Explanation of Session Codes

MA4

Day of the Week Presentation Designation Session Designation

The first letter of the code designates the day of the week. Each day begins with the letter A in the second element and continues alphabetically through the session day. The lettering then restarts with each new series. The number on the end of the code (separated from the session code with a period) signals the position of the talk within the session (first, second, third, etc.). For example, a presentation coded MA4 indicates that this paper is being presented on Monday (M) in the first session (A) and is the fourth paper (4) presented in that session.

Plenary Presentations

Tuesday, April 24, 2018, TuA1 8:50, Room 1 Nonlinear THz spectroscopy of graphene and GaAs quantum wells using a free-electron laser H. Schneider, Institute of Ion-Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, GERMANY [email protected] This talk reviews some recent experiments using FEL-based intense narrow-band terahertz fields, in particular pump-induced optical anisotropy and nonlinear four-wave mixing in graphene, and dressing of excitons, exciton-polaritons, and intersubband transitions in GaAs quantum wells.

Harald Schneider received his diploma (master) degrees in physics and in mathematics from the University of Tübingen, Germany in 1985 and completed his Ph. D. at the Max-Planck Institute for Solid-State Research, Stuttgart, Germany, in 1988. In 1989 he moved to the Fraunhofer-Institute for Solid State Physics, Freiburg, Germany, and in 2005 to the Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, where he is currently working as a department head. He has been faculty member at the University of Freiburg, Germany, since 2003. He was Visiting Overseas Chair Professor at the Shanghai Jiao Tong University from 2010 to 2013 and was selected for "1000 Talents Plan" (Foreign Expert Program) of the Chinese Central Government in 2013. His research interests include optoelectronic properties of semiconductors, ultrafast and free-electron laser based infrared and THz spectroscopy, and detectors for the infrared and THz regimes. He was awarded the 2001 German Science Foundation Award for the development of infrared cameras with highest thermal resolution. He served as committee member in more than 20 international conferences, gave more than 40 invited conference talks, and co-authored more than 300 publications.

Tuesday, April 24, 2018, TuA2 9:35, Room 1 Information Metamaterials and Metasurfaces T. Cui, State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, Jiangsu, CHINA [email protected] In this presentation, the coding, digital, and field programmable metamaterials and metasurfaces are systematically introduced with particular emphases on recently new developments. The future trend of information metasurfaces and metamaterials is also predicted.

Prof. Tie Jun Cui received the Ph.D. degree in Xidian University, Xi’an, China, in 1993. In March 1993, he joined the Department of Electromagnetic Engineering, Xidian University, and was promoted to an Associate Professor in November 1993. From 1995 to 1997 he was a Research Fellow with Institut fur Hochstfrequenztechnik und Elektronik (IHE) at the University of Karlsruhe, Germany. In July 1997, he joined Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, first as Postdoc and then Research Scientist. In September 2001, he became a Cheung-Kong Professor with Department of Radio Engineering, Southeast University, Nanjing, China. From 2013, he has been a Representative of People’s Congress of China.

Dr. Cui is the first author of books Metamaterials – Theory, Design, and Applications (Springer, 2009) and Metamaterials: Beyond Crystals, Noncrystals, and Quasicrystals (CRC Press, 2016). He has published over 400 peer-review journal papers in Science, PNAS, Nature Communications, Light Science & Applications, Physical Review Letters, Advanced Materials, etc., which have been cited by more than 18500 times (H-Factor 70). Dr. Cui was awarded a Research Fellowship from the Alexander von Humboldt Foundation, Bonn, Germany, in 1995. He received Young Scientist Award from the International Union of Radio Science (URSI) in 1999, National Science Foundation of China for Distinguished Young Scholars in 2002, and Special Government Allowance awarded by Department of State, China, in 2008. He received the First Prize of Natural Science Awards from Ministry of Education, China, in 2011, the Second Prize of National Natural Science Awards, China, in 2014, and the First Prize of Military Science and Technology Progress Awards, China, in 2016. His research has been selected as “Optics in 2016” by Optics and Photonics News Magazine (OSA), “10 Breakthroughs of China Optics in 2016”, “10 Breakthroughs of China Science in 2010”, “Best of 2010” in New Journal of Physics, and Research Highlights in many academic journals. His work has been reported by Nature News, Science, MIT Technology Review, Scientific American, New Scientists, etc.

Wednesday, April 25, 2018, WA1 8:30, Room 1 Progress in ultrafast terahertz scanning tunneling microscopy F.A. Hegmann, University of Alberta, Edmonton, Alberta, CANADA [email protected] The ability to directly probe ultrafast phenomena on the nanoscale is essential to our understanding of excitation dynamics on surfaces and in nanomaterials. Recently, a new ultrafast scanning tunneling microscope (STM) technique that couples terahertz (THz) pulses to the scanning probe tip of an STM was demonstrated (THz-STM), showing photoexcitation dynamics of a single InAs nanodot with simultaneous 0.5 ps time resolution and 2 nm spatial resolution under ambient conditions. Operation of THz-STM in ultrahigh vacuum now makes it possible to spatially-resolve subpicosecond dynamics of single molecules and silicon surfaces with atomic precision. This talk will discuss how THz-STM works, recent progress, and how THz-STM can provide new insight into ultrafast dynamics on the atomic scale, which is essential for the development of novel silicon nanoelectronics and molecular-scale devices operating at terahertz frequencies.

Frank Hegmann received his PhD in Physics from McMaster University in 1994 and then worked as a postdoctoral researcher at the Center for Terahertz Science and Technology at the University of California, Santa Barbara. In 1997, he started as an assistant professor in the Department of Physics at the University of Alberta studying ultrafast dynamics in materials using time-resolved terahertz (THz) pulse spectroscopy. He is currently a Professor in Physics and AITF Strategic Chair in Terahertz Science and Technology with research interests in THz pulse spectroscopy of nanomaterials, ultrafast imaging, ultrafast THz-STM, terahertz nonlinear dynamics, and biological effects of intense THz pulses.

Wednesday, April 25, 2018, WA2 9:15, Room 1 High energy and high efficiency chirped pulse amplifiers in 10 PW laser X. Liang, Z. Gan, W. Li, L. Yu, Y. Liu, C. Wang, Y. Hang, Y. Leng, R. Li, Z. Xu, Shanghai Inst of Optics & Fine Mechanics, Shanghai, Shanghai, CHINA [email protected] A high energy and efficiency amplifier in SULF laser was demonstrated with output energy of 339J, which contained a Ti:Sapphire crystal with diameter of 235mm. After compression, the peak power of 10.3 PW was achieved. Prof. Liang received her Ph.D degree in 2001 and joined Shanghai Institute of Optics and Fine Mechanics in 2003. Her current research is mainly in the fields of laser technologies, diagnosis and applications, coherent beam combining and nonlinear optics. Recently, she is engaging in 10 PW laser of SULF project.

Wednesday, April 25, 2018, WE1 13:30, Room 1 Recent Progress on terahertz source, modulation and its applications

Jianquan Yao, Institute of Laser and Optoelectronics, Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, CHINA [email protected] The development of terahertz (THz) source and modulation facilitates a wider variety of applications. This talk addresses our recent researches on THz sources based on THz parametric oscillator and difference frequency generation and proposes a novel modulation technology that combines the modulation of both the THz sources and devices. The works of THz applications in biomedical diagnostics by transmission imaging, attenuated total reflection imaging and metamaterial based biosensors are described as well, followed by summarization of the recent progress and prediction of the future trends of THz technology.

Jianquan Yao, member of Chinese Academy of Science, professor of Tianjin University, is engaged in the researches on nonlinear optics, physics and technology of laser and THz, and micro-nano optoelectronic materials. He has served as a visiting professor in Stanford University, Princeton University, University of Pennsylvania in USA, and some other universities in UK, France Germany, Russian, Hong Kong and Taiwan. Professor Yao’s major achievements are on the laser and optical frequency conversion technology. He presented and developed the theory and method of precise calculation of the optimum phase matching for three wave interactions with nonlinear optical biaxial crystals. His papers were named “Yao and Fahlen Technology”. He advanced “Gaussian like distribution” of laser resonant theory. He developed the theory of laser frequency doubling under high conversion efficiency and new method with quasi-CW pumping. He developed an intracavity frequency doubled Nd:YAG laser whose output power was up to 150 Watts, and this laser source was used to establish laser three dimension scanning photography system. He invented the dye and Titanium sapphire tunable laser systems pumped by quasi-CW green laser source. He established a quasi-CW pumped—tunable laser technical system, making important contributions to the development of the new solid-state laser and tunable laser technologies. Recently, he focuses on high power laser diode pumped solid state laser, tunable laser, frequency conversion by quasi-phase matching technology using periodical poled crystals for SHG and OPO, as well as THz wave generation by DFG and TPO and some other nonlinear optical methods. He was awarded Second Prize for National Invention et al. He published three books: “Nonlinear Optical Frequency Conversion and Tunable Laser Technology” (Science Press, 1995), “All Solid State Laser and Nonlinear Optical Frequency Conversion Technology” (Science Press, 2007), and “Nonlinear Optics and Solid-State Lasers: Advanced Concepts, Tuning-Fundamentals and Applications (Springer Series in Optical Sciences, 2012). He was elected Member of the Chinese Academy of Sciences in 1997.

Wednesday, April 25, 2018, WE2 14:15, Room 1 Generation, Characterization, and Applications of Single-cycle Laser Pulses K. Kim, Institute for Basic Science, Gwangju, KOREA (THE REPUBLIC OF) [email protected] New methods for the generation and characterization of a single cycle laser pulse are presented. The applications of the single cycle laser pulse on high harmonic generation and frustrated tunneling ionization are also discussed. Prof. Kyung Taec Kim has started his research carrier through his Master and Ph. D. degree courses at KAIST under the supervision of Prof. Chang Hee Nam. He has proposed an attosecond pulse compression using x-ray filters and developed techniques for the characterization of the electron wave packet produced by the attosecond pulses during his degree courses. After he obtained Ph. D, he participated in the project to build the PW laser facility in the Advanced Photonics Research Institute at Gwangju Institute of Science and Technology (GIST) in Korea. In 2010, he has joined Paul Corkum’s research group at the National Research Council in Canada. He developed optical techniques to measure the space-time coupling of attosecond pulses and arbitrary optical waveforms of light pulses. Prof. Kyung Taec Kim is now a group leader of the attosecond science group in the center of the relativistic laser science of the institute of basic science at GIST in Korea.

Thursday, April 26, 2018, ThA1 8:30, Room 1 Recent Development on THz Aqueous Photonics X. Zhang, U of Rochester, The Institute of Optics, Rochester, New York, UNITED STATES [email protected] We demonstrated THz wave generation from liquid water in spite of its infamously strong absorption characteristics. It is reasonable to expect that liquids might have unique properties if they could be harnessed as THz sources.

Xi-Cheng Zhang is M. Parker Givens Chair of Optics at The Institute of Optics, a foremost institution in optics and optical physics research and education, in the University of Rochester, NY, USA. He was the director of The Institute from Jan. 2012 to June 2017.

Prior to joining UR on 1 January 2012, he pioneered world-leading research in the field of ultrafast laser-based terahertz technology and optical physics at Rensselaer Polytechnic Institute, Troy, NY (1992-2012). At RPI, he was the Eric Jonsson Professor of Science; Acting Head at the Department of Physics, Applied Physics & Astronomy; and Founding Director of the Center for THz Research. He is co-founder of Zomega Terahertz Corp. With a B.S. (1982) from Peking University, he earned the Ph.D. degree (1986) in Physics from Brown University, RI.

He is a Fellow of OSA, SPIE, AAAS, APS, and IEEE. Xi-Cheng¹s recent honors and awards include: Australian Academy of Science Selby Fellow (2017); IRMMW-THz Kenneth Button Prize (2014); OSA William F. Meggers Award (2012) and IEEE Photonics Society William Streifer Scientific Achievement Award (2011). He holds 29 U.S. patents, and is a prolific author, researcher and speaker. He serves as the editor in chief of Optics Letter for OSA since 2014.

Thursday, April 26, 2018, ThA2 9:15, Room 1 Ultrafast light manipulation using photonic micro/nano-structures

Qihuang Gong, Jianjun Chen, Zheng Chai, Hong Yang and Xiaoyong Hu State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, P. R. CHINA [email protected] Micro/nano photonic structures permit remarkable control of the propagation of light. The micro/nanoscale ultrafast light manipulation paves the way for the realization of various nanoscale integrated photonic devices, which construct the essential basis of ultrahigh-speed and ultrawide-band information processing chips. Moreover, for practical chip-integration applications, several significant features, including on-chip trigger, ultrafast response, ultralow energy consumption, and wideband (or multiple-wavelength) operation, are stringently required.

In this presentation, a selection of recent results will be presented. we realized an ultrafast, ultralow power, on-chip-triggered 2x2 all-optical switch with multiple operating wavelengths based on plasmon–photon hybrid nanostructures coated nonlinear multi-component nanocomposite material formed directly in integrated photonic circuits. Low threshold pump intensity of 450 kW/cm2, fast response of 63 ps, and multiple operating wavelengths were realized simultaneously. An ultralow-power all-optical logic data distributor with dual address bits is also realized, based on a large nonlinearity enhancement occurs in the nanocomposite material through resonant excitation via an upconversion radiative-transfer process, which ensures an ultralow operating threshold control intensity of 10 kW/cm2. An ultrafast response time of several picoseconds is simultaneously maintained based on structural defects inducing ultrafast decay of excited-state carriers. Based on tunable Fano resonance or PIT of metallic nanostructures, ultrafast modulations on light transmission were also demonstrated. Moreover, ultracompact plasmonic devices including SPP unidirectional generator, splitter and others were experimentally demonstrated.

Professor Qihuang Gong is the Academician of Chinese Academy of Science, Boya Chair Professor of Peking University, Cheung Kong Professor of Physics at Peking University, China, where he is the Founding Director of the Institute of Modern Optics. He also serves as the Vice President of Peking University. In addition, Prof. Gong serves as Director of Academic committee of the State Key Laboratory for Artificial Microstructure and Mesoscopic Physics. Prof. Gong is member of the Chinese Academy of Sciences and member of the world academy of sciences.

His current research interests are in ultrafast optics and spectroscopy, nonlinear optics, and mesoscopic optical devices for applications in optical information processing and communication. He has authored more than 300 articles which have received approximately 10,000 citations, with an H-index of 39. His group has been awarded 25 patents. Prof. Gong has received numerous awards, including The State Natural Science Award (2nd -Class), the Beijing City Science and Technology Award (1st -Class), the Science and Technology 20

Award ( 1st-Class) of Ministry of Education, the Chinese Physical Society’s Rao Yutai Physics Prize, the Wang Daheng Science and Technology Prize given by the Chinese Optics Society and HLHL Science and Technology Award. He has won the Youth Scholar Award (Physics) of the Hong Kong Qiushi Foundation, and the Science and Technology Award for China Youth. He has also been the honored winner of special government allowances, and he was named one of the Top 10 Excellent Youths of Beijing. He is a Fellow of Optical Society of America (OSA), Fellow of Institute of Physics (IoP) and Fellow of Chinese Optical Society (COS).

Prof. Gong is currently the chief scientist of the National 973 Project (the Chinese National Basic Research Program), Principal of the creative research group of the National Natural Science Foundation of China, the group leader for the creative research group of the Ministry of Science . Prof. Gong has served as a topical editor for Optics Letters, advisor editor of Chemical Physics, Chemical Physics Letters, Advanced Optical Material, Optics Communications, Annalen der Physik and associate editor-in-chief of Chinese Physics B, Chinese Optics Letters, Chinese Optics and Applied Optics (in Chinese), Acta Physica Sinica (in Chinese) and Quantum Electronics (in Chinese). He serves as the President of the Chinese Optical Society, Vice President of the Chinese Physical Society. He is the Standing Committee member of China Association for Science and Technology. Prof. Gong is the vice chair for ICO (International Commission for Optics) and vice chair for IUPAP C17 (Quantum Electronics).

TuA Plenary session I

Tuesday, April 24, 2018, TuA 8:50--10:20, Room 1 Xuechu Shen,Shanghai Institute of Technical Physics, CAS, China, Presider

TuA1 8:50, plenary Nonlinear THz spectroscopy of graphene and GaAs quantum wells using a free-electron laser Harald.Schneider, Institute of Ion-Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, GERMANY| This talk reviews some recent experiments using FEL-based intense narrow-band terahertz fields, in particular pump-induced optical anisotropy and nonlinear four-wave mixing in graphene, and dressing of excitons, exciton-polaritons, and intersubband transitions in GaAs quantum wells.

TuA2 9:35, plenary Information Metamaterials and Metasurfaces Tie Jun. Cui, State Key Laboratory of Millimeter Waves, Southeast University, Nanjing,Jiangsu, CHINA| Metamaterials are traditionally described by effective medium parameters due to subwavelength scales of unit particles. The continuous nature of the medium parameters makes the traditional metamaterials behave as analog metamaterials. Recently, the concept of coding metamaterials or metasurfaces has been proposed, in which metamaterials are characterized by 1-bit digital coding particles of ‘0’ and ‘1’ with 180° phase difference, or 2-bit digital coding particles of ‘00’, ‘01’, ‘10’, and ‘11’ with 90° phase difference, etc. It was demonstrated that the electromagnetic waves can be manipulated by changing the digital coding sequences. The coding particles provide a link between the physical world and digital world, leading to digital metamaterials and even field programmable metamaterials, which can be used to control the electromagnetic waves in real time. The digital coding representation of metamaterials or metasurfaces allows the concepts and signal processing methods in information science to be introduced to the physical metamaterials, realizing extreme controls to the electromagnetic waves, such as Shannon entropy, convolution theorem, and addition theorem. Such studies set up the foundation of information metamaterials and metasurfaces. In this manner, metamaterials are not only the effective materials, but can also be real-time information processing systems (e.g. new-concept radar, programmable imaging and hologram, and new-concept communication systems). In this presentation, the coding, digital, and field programmable metamaterials and metasurfaces are systematically introduced with particular emphases on recently new developments. The future trend of information metamaterials is also predicted.

TuB Extreme terahertz science and technology I

Tuesday, April 24, 2018, TuB 10:50--12:00, Room 1 Alexander Shkurinov, M. V. Lomonosov Moscow State University, Presider

TuB1 10:50 Keynote Sub-cycle THz nonlinear optics using large-aperture photoconductive antennas Tsuneyuki. Ozaki, INRS-EMT, Varennes, Quebec, CANADA| Using intense quasi-half-cycle terahertz pulses from a large-aperture photoconductive antenna, we demonstrate sub-cycle terahertz nonlinear optics. Experiments reveal strong THz transmission bleaching and the generation of high frequency components. Tsuneyuki Ozaki is a Professor at the INRS (Canada), the former Director of the Advanced Laser Light Source (2006 to 2012), and the current Chair of Commission 17 “Laser Physics and Photonics” of IUPAP. His main research interests include high-intensity THz sources and their applications, and intense high-order harmonics.

TuB2 11:20 Invited Single-shot electro-optic detection for intense terahertz pulses Shixiang. Xu, Shenzhen University, Shenzhen, GuangDong, CHINA| We report a single-shot terahertz common-path spectral interferometer based on electro -optic sampling, which can improve experimentally the measured signal-noise ratio (SNR) by 11.4 times compared with Mach-Zehnder interferometer.

TuB3 11:40 Invited Strong-field Terahertz Generation and its Applications Xiaojun. Wu, S. Chai, D. Kong, C. Ruan, J. Miao, Beihang University, Beijing, CHINA|J. Ma, B. Zhang, S. Li, Y. Li, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, Beijing , CHINA|B. Zhang, S. Li, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China, Beijing , CHINA| We demonstrate generation of 0.2 mJ terahertz pulses with >0.4% optical-to-terahertz efficiency delivering a focused electric field of 4 MV/cm at 0.3 THz in lithium niobate at room temperature driven by chirped femtosecond laser pulses.

TuC Novel terahertz detectors

Tuesday, April 24, 2018, TuC 10:50--12:00, Room 3 Wei Shi, Xi’an University of Technology, China, Presider

TuC1 10:50 Keynote High-sensitivity and fast terahertz bolometric detection by MEMS resonators Kazuhiko. Hirakawa, University of Tokyo, Meguro-ku, Tokyo, JAPAN| Using a novel thermomechanical transduction scheme. We have developed an uncooled, sensitive, and fast THz bolometer by using a doubly clamped GaAs MEMS beam resonator as a sensitive thermistor. The MEMS bolometer achieves an operation bandwidth of several kHz, which is ~100 times faster than other uncooled thermal sensors. Kazuhiko Hirakawa received the B.E., M.E., and Ph.D. degrees in electronic engineering in 1982, 1984, and 1987, respectively, from University of Tokyo. He is currently a professor at Institute of Industrial Science, University of Tokyo. He was a visiting researcher at Princeton University for 1991-1993 and a visiting professor at Laboratoire Pierre Aigrain, Ecole Normale Superieure in 2006. His research interests include electron transport and terahertz photodynamics of quantum nanostructures.

TuC2 11:20 Invited Characterization of field-effect terahertz detectors by using terahertz time-domain spectroscopy Hua. Qin, Y. Yu, J. Sun, Suzhou Inst. of Nano-tech & Nano-bionics, Suzhou, JiangSu, CHINA| Antenna-coupled field-effect transistors (FETs) are being developed as sensitive and fast terahertz detectors. We report preliminary results on characterization of AlGaN/GaN-FET detectors by using terahertz time-domain spectroscopy.

TuC3 11:40 Invited Tailoring structure imperfection in ZnTe bulk crystals and improving the terahertz response Yadong. Xu, J. Dong, Northwestern Polytechnical University, Shaanxi, CHINA| High singularity ZnTe in dimension of 60 mm are grown in this work by temperature gradient solvent method. The post growth processing including surface modification and wafer annealing were performed for further THz response optimization.

TuD Ultrafast phenomena in micro and nano-structures

Tuesday, April 24, 2018, TuD 10:50--12:00, Room 2 Jing Chen, Beijing Institute of Applied Physics and Computational Mathematics, China, Presider

TuD1 10:50 Keynote Ultrafast Dynamic and Nonlinear Optics in Metamaterial/Plasmonic Structures Kam. Sing. Wong, Hong Kong Univ of Science & Technology, Kowloon, HONG KONG| We will report on our study of femtosecond temporal delays for laser pulses pass through subwavelength metallic hole arrays and multipolar effects in the optical active second harmonic generation (SGH) for sawtooth chiral metamaterials . Kam Sing WONG received the BSc (Hons.) degree (1983) in physics from King’s College, University of London, London, U.K., in 1983 and the D. Phil degree (1987) in solid-state physics from Clarendon Laboratory, University of Oxford, Oxford, U.K., in 1987.He joined the Physics Department of Hong Kong University of Science and Technology (HKUST) in 1991 as the founding faculty and currently a full professor at the department. His main research interests include ultrafast lasers and nonlinear optics, time-resolved spectroscopy, semiconductor and polymer physics, photonic crystal and plasmonics. He has published over 200 peer-reviewed journal publications, 4 patents, total citations over 7000 and h-index of 45.

TuD2 11:20 Invited Ultrafast Plasmons Probed by Photoemission Electron Microscopy Quan. Sun, K. Ueno, H. Misawa, Hokkaido University, Sapporo, HOKKAIDO, JAPAN|H. Misawa, National Chiao Tung University, Hsinchu, TAIWAN| The near field and dynamics of surface plasmons are probed by photoemission electron microscopy. In particular, we reveal plasmon interaction in strong coupling region and observed ultrafast dynamics of plasmons in the coupled plasmonic systems.

TuD3 11:40 Invited Nitride based quantum dot single photon source Mo. Li, China Academy of Engineering Physics, Mianyang, CHINA| Nitride based nanowire quantum dots (NQDs) as single photon sources (SPS) have attracted lots of research interests with a wide wavelength range from visible to near-infrared. Here we presented InGaN/GaN NQDs fabricated by top-down method and selective area grown, which is promising for integrated chip-scale SPS. Based on that structure, hyperbolic metamaterial was proposed to enhance the performance of InGaN/GaN NQDs SPS, such as the spontaneous emission rate and photon extraction efficiency. Our research provides a novel idea for high-frequency, high-brightness and directional InGaN/GaN NQDs SPS.

TuE Extreme terahertz science and technology II Tuesday, April 24, 2018, TuE 13:30--15:20, Room 1 Peng Liu, Shanghai Inst of Optics and Fine Mech, China, Presider

TuE1 13:30 Keynote >mJ terahertz radiation sources from intense laser-foil interactions Yutong. Li, Inst Physics, Chinese Academy Sciences, Beijing, BEIJING, CHINA| Terahertz radiation with energies up >1 mJ generated by transition radiation of intense laser-accelerated electron beams crossing a foil has been demonstrated. The source will provide opportunities for studying nonlinear THz-matter interactions. Yutong Li studies intense laser plasma interactions, laser-driven particle and radiation sources, laboratory astrophysics. He has published more than 150 papers, included 9 in PRL and 2 in Nature Physics. He has won awards, including the Ten Thousand Talent Program, Distinguished Young Scholar of National Natural Science Foundation. etc.

TuE2 14:00 Invited High-power THz radiation from two-color laser filamentation at low pressures Y. Yoo, D. Jang, Kiyong. Kim, University of Maryland at College Park, College Park, Maryland, UNITED STATES|Y. Yoo, Thorlabs Imaging Systems, Sterling, Virginia, UNITED STATES| We have studied THz emission from elongated, two-color-laser filamentation with various gas species and pressures. We observe enhanced THz radiation at low gas pressures with a maximum laser-to-THz conversion efficiency of 0.1%.

TuE3 14:20 Invited Wavelength Scaling of Terahertz Wave Generation from Laser-Induced Air Plasma Cunlin. Zhang, Capital Normal University, Beijing, CHINA| We examine the terahertz (THz) emission from air filament driven by two-color lasers with relatively longer wavelengths than 800 nm. The THz energy dependence on the input laser energy increases more rapidly with a longer laser wavelength, and the scaling laws of THz energy as a function of fundamental wavelength vary for different optical powers.

TuE4 14:40 Invited Theoretical and experimental studies on THz Radiation via two-color laser scheme Weimin. Wang, Chinese Academy Sciences Inst Physics, Beijing , CHINA| Our two theoretic reports predicted efficient THz generation with new frequency ratios 1:4, 2:3, etc. Recently, this prediction has been verified by our experiments for the first time.

TuE5 15:00 Invited Effective control of strong terahertz radiation from femtosecond laser produced air plasmas Yanping. Chen, Shanghai Jiao Tong University, Shanghai, CHINA| We investigated strong terahertz radiation from a two-color laser-induced air-plasma. An effective control of waveform, spatial distribution and polarization of such terahertz pulse is demonstrated.

TuF Terahertz in biomedical systems

Tuesday, April 24, 2018, TuF 13:30--15:20, Room 3 Chao Chang, Xian Jiaotong University, China, Presider

TuF1 13:30 Keynote Terahertz in vivo skin imaging Emma. Pickwell-MacPherson, University of Warwick, Warwick, UNITED KINGDOM|Q. SUN, J. Wang, Electronic Engineering, Chinese University of Hong Kong, Hong Kong, HONG KONG| In this work we present recent in vivo studies of skin. We show how the THz response of skin is affected by occlusion time, pressure applied to the skin, and skin treatments. Dr Pickwell-MacPherson completed both her undergraduate and graduate degrees at the University of Cambridge (2001 and 2005 respectively). She moved to the Chinese University of Hong Kong in 2006 to set up her own Terahertz research group. Her research aims to improve terahertz imaging and spectroscopy techniques for non-invasive diagnosis and monitoring of skin conditions including (but not limited to) skin cancer. Dr Pickwell-MacPherson joined the Physics Department at Warwick University, UK in October 2017 and has won a Wolfson Merit award from the Royal Society to support her research in the UK. TuF2 14:00 Invited A terahertz microfluidic chip for ultra-trace measurement of solution Kazunori. Serita, E. Matsuda, K. Okada, H. Murakami, I. Kawayama, M. Tonouchi, Osaka University, Suita, OSAKA, JAPAN| We developed a terahertz microfluidic chip with a few arrays of split ring resonators. The obtained resonance spectrum shows the high-sensitive frequency shift to detect femtomol of solutes in sub nanoliter of solution. TuF3 14:20 Invited High-sensitive label-free biosensing from metamaterials Biaobing. Jin, Nanjing University, Nanjing, JIangSu, CHINA| We demonstrated our recent works on label-free THz biosensing from metamaterial. TuF4 14:40 Invited Terahertz spectroscopy of neurodegenerative diseases: the correlation between terahertz biophysics and pathological analysis Liguo. Zhu, Y. Zou, J. Li, Q. Liu, China Academy of Engineering Physics, Mianyang, SICHUAN, CHINA| In this talk, I'll review and present our recent studies on THz spectroscopy of neurodegenerative diseased brain tissue and living cell. The well-matched correlation between THz biophysical properties and pathological analysis will also be discussed. TuF5 15:00 Invited The research on THz application in biomedical diagnosis Yuye. Wang, Tianjin University, TIANJIN, TianJin, CHINA| THz imaging of different degrees of experimental traumatic brain injury (TBI) has been demonstrated in fresh slices of rat brain tissues. The high absorption region in THz images corresponded well with the injured area in visible images and magnetic resonance imaging results. The distinguishable mechanism by THz wave was studied, which could be attributed to the different water contents and probable hematoma components distribution rather than intrinsic cell intensity.

TuG High-field physics and attosecond science I

Tuesday, April 24, 2018, TuG 13:30--15:20, Room 2 Ri Ma, Jilin University, China, Presider

TuG1 13:30 Keynote Tuning femtosecond laser from visible to mid-infrared range Zhiyi. Wei, Institute of Physics, CAS, Beijing, CHINA| Efficient optical parametrical oscillators and amplifiers were researched with different nonlinear crystals such as LBO, BBO, BiBO, KTA and SiC. Laser power up to 1.9W in the range from 688 to 1057nm, 2.32W in the range from 1.41-1.71m, 1.3W in the range from 2.61 to 3.84 m, and the energy up to 520J at 2.8m were obtained, corresponding to the maximum efficiency as high as 30%. Zhiyi Wei obtained his Ph.D degree in 1991. After two years postdoctoral fellow at Sun Yat-Sen University in China, he worked at the Rutherford Appleton Lab in UK, the Chinese University of Hong Kong, the Hong Kong University of Science and Technology, University of Groningen in the Netherland as a visiting scholar and postdoc during 1993 to 1997. He joined in the Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences (CAS) in 1997. From April 2000 to Sept 2002, he also worked at the Advanced Industrial Science and Technology (AIST) in Japan as a NEDO researcher. His research interests focus on ultrafast ultraintense laser technology. Up to now, he has published more than 200 peer-reviewed papers. He has awarded by the State Natural Science Award (2nd-Class), the excellent achievements (team) and contributions (2nd-Class) for science and technology by CAS. He also won the Young Scientist Prize by CAS in 2001, HuGangfu Prize by the Chinese Physical Society in 2011. He is a fellow of the Optical Society of America. Presently he is the group leader of ultrafast laser and the director of Joint Laboratory of Advanced Technology in Measurements at Institute of Physics, CAS. He is also the international advisory member of the journal of Measurement Science and Technology (MST), member of C2 (Symbol and Constants) sub-committee of international committee of applied physics and pure physics (IUPAP), committee member of Max-Planck Center for Attosecond Sciences.

TuG2 14:00 Invited Lattice Stability in Non-equilibrium Warm Dense Matter Andrew. Ng, Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, CANADA| This talk is a brief review of two studies of lattice stability in fs-laser heated Au nanofoils at the Lawrence Livermore National Laboratory and SLAC National Accelerator Laboratory, using time-resolved Frequency Domain Interferometry.

TuG3 14:20 Invited CEP-Stabilized Few-Cycle Laser Pulses Based on Supercontinuum from Gas and Solid Media Kun Zhao,Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China Carrier-envelope phase (CEP) stabilized few-cycle laser pulses have important applications in high-order harmonic generation (HHG), coherent light synthesis, and isolated attosecond pulse generation in the extreme-ultraviolet(XUV) band. Up to now, few-cycle laser pulses were generated from gas-filled hollow-core fibers. However, this scheme suffers a large loss. In this talk, we report our recent progress on generation of few-cycle laser pulses toward higher energy. With input pulses of 35 fs and 5 mJ at 1kHz, 6.3fs/1.8mJ and 6.7fs/2mJ laser pulses were generated from helium- and neon-filled hollow-core fibers respectively. To explore for higher pulse energy, we employed a set of thin solid plates to replace the hollow-core fiber for spectral broadening. Driven by 0.8-mJ, 30-fs laser pulses, 0.7-mJ white light was obtained through 7 thin silica plates with a thickness of 0.1 mm, corresponding to an efficiency of 87.5%. Our analysis showed both self-phase modulation and self-steepening played major roles in the supercontinuum generation. With such an octave spectrum from 450 nm to 980 nm, CEP was measured and locked directly by an f-2f interferometer. HHG experiments were performed as the CEP was tuned from 0 to π/2, the cut-off of the observed XUV spectrum changed from continuous to discrete, indicating that the CEP was successfully locked and controlled.TuG5 15:00

TuG4 14:40 Invited Relaxation Dynamics after Strong Laser interacting with Dense Hydrogen Jiayu. Dai, National University of Defense Technology, Hunan, CHINA| The electron-ion relaxation in warm dense hydrogen is investigated by molecular dynamics (MD) simulation with Electron Force Field method (eFF), showing extremely low energy exchange rates.

TuG5 15:00 Invited Brilliant γ-ray flashes and attosecond positron bunches from a nanofiber target driven by ultraintense lasers Tongpu. Yu, H. Li, L. Hu, Y. Lu, D. Zou, Y. Yin, F. Shao, National Uni. of Defense Technology, Changsha, HUNAN, CHINA| We propose an all-optical scheme for brilliant γ-ray flashes and attosecond positron bunches generation. The γ-ray flashes are emitted with peak brightness ~1024 photons s-1mm-2mrad-2 and dense attosecond positrons with flux of 1010 are produced.

TuH Terahertz spectroscopy and imaging I

Tuesday, April 24, 2018, TuH 15:40--17:10, Room 1 Xiaoyu Peng, Chongqing Institute of Green and Intelligent Technology, CAS, China, Presider

TuH1 15:40 Keynote Photoluminescence and Photorflectance Spectroscopy in Infrared of up to Terahertz Jun. Shao, W. Lu, X. Chen, J. Chu, Shanghai Institute of Technical Physics, Shanghai, SHANGHAI, CHINA| Recent activities in photoluminescence (PL) and photoreflectance spectroscopies in the Key Laboratory for Infrared Physics, China, are introduced briefly, with focus on infrared modulated PL method and its applications to narrow-gap semiconductors. Jun Shao got his first two university degrees at Nanjing University, and became PhD at Universitaet Stuttgart. He then devoted to optical spectroscopy, and was selected as Shanghai Subject Chief Scientist and Existing Talent of the Key Technologies, CAS, and was appointed to Editorial Board of RSI and AIP in 2010.

TuH2 16:10 Invited The applications of terahertz parametric sources Kodo. Kawase, K. Murate, Nagoya University, Chikusa, Nagoya, AIchi, JAPAN| We report several topics; i) Enhanced tuning range up to 5 THz, ii) 100dB dynamic range THz detection using near infrared detector, iii) Comparison between is-TPG spectrometer and TDS, iv) THz Spectroscopic imaging.

TuH3 16:30 Invited Terahertz time-domain spectroscopy for magnonics and magnetotransport Zuanming. Jin, X. Liu, S. Zhang, W. Zhao, X. Lin, C. Jin, S. Cao, G. Ma, Shanghai University, Shanghai, CHINA|Z. Zhang, Fudan University, Shanghai, CHINA|Z. Cheng, University of Wollongong, Wollongong, New South Wales, AUSTRALIA|J. yao, Tianjin University, Tianjin, Tianjin, CHINA| Terahertz (THz) time-domain spectroscopy can be used to investigate the spintronic effects, such as low-energy magnons and magneto transports, in the ultrafast operation regime, sub-picosecond time scale and/or terahertz frequency range.

TuH4 16:50 Invited Terahertz spectroscopy under extreme conditions such as high magnetic field, high pressure Fuhai. Su, Institute of Solid State Physics, Hefei, ANHUI, CHINA| We studied the Terahertz (THz) spin resonance spectroscopy in magnetic materials under high magnetic field, and demonstrate the feasibility of THz time-domain spectroscopy up to 20 GPa pressure by combining diamond anvil cell (DAC).

TuI Terahertz science and technology in micro and nano-structures I Tuesday, April 24, 2018, TuH 15:40--17:10, Room 3 Shengjiang Chang, Nankai University, China, Presider Jierong Chen, Nankai University, China, Presider TuI1 15:40 Keynote Generation and application possibilities of THz pulses with extremely high field strength Janos. Hebling, Institute of Physics, University of Pecs, Pecs, HUNGARY| After an overview of high energy THz pulse sources, methods to increase the energy of THz pulses generated by tilted-pulse-front pumping set-up to few-mJ level, and the application possibilities of these pulses will be discussed. János Hebling (M) received the M.S. and Ph.D. degrees in physics from the University of Szeged, Szeged, Hungary, in 1978 and 1982, respectively. He was with the Max-Planck Institute for Solid State Research, Stuttgart, Germany, for more than six years and with the Massachusetts Institute of Technology, Cambridge for two years. He is with the University of Pécs, Pécs, Hungary, where he was the Head of the Experimental Physics Department from 1999 to 2010 and the Director of the Institute of Physics from 2008 to 2017. Since 2012 he has been the Head of the MTA-PTE High-Field Terahertz Research Group. He is the author of more than 100 articles and the inventor of 11 patents. His research interests include ultrafast time-resolved spectroscopy of solids, nonlinear optics, generation and application of terahertz pulses, and the generation of waveform-controlled attosecond pulses. Prof. Hebling is a Fellow of the Optical Society of America. He is a topical editor of the Journal of the Optical Society of America B. He is the recipient of the Pál Selényi, the Széchenyi, and the Ányos Jedlik Awards. TuI2 16:10 Invited Semiconductor based THz components Jinghua. Teng, A*STAR, Singapore, SINGAPORE| This talk will introduce several of our work on semiconductor based THz components. They include CW THz emitter using LTGaAs photoconductive antenna, sub-THz detector using GaN 2DEG HEMT, and tunable THz devices on Si and InSb. TuI3 16:30 Invited Active MEMS based THz metamaterials: Memory effects and logical operation Ranjan. Singh, Nanyang Technological University, Singapore, SINGAPORE| Microelectromechanical systems provide reconfigurability to THz metamaterials and have become an important area of photonic research. Here, I will present three-dimensional symmetry broken Fano resonators using MEMs cantilever that enable memory effects and logical operations. TuI4 16:50 Invited Terahertz surface plasmons with metasurface Jiaguang. Han, Tianjin University, Tianjin, TianJin, CHINA| Surface plasmon polaritons (SPPs) promise versatile potential applications in many aspects and thus have been a subject of enormous interest. However, in the terahertz regime, due to perfect conductivity of most metals, it is hard to realize a strong confinement of SPPs although a propagation loss could be sufficiently low. Here we introduce the recent work from terahertz surface waves to spoof SPPs based on metasurfaces.

TuJ High-field physics and attosecond science II Tuesday, April 24, 2018, TuH 15:40--17:10, Room 2 Xiaojun Liu, Wuhan Institute of Physics and Mathematics, China, Presider

TuJ1 15:40 Keynote Nonadiabatic effect of strong-field tunneling ionization Yunquan. Liu, School of Physics, Beijing, BEIJING, CHINA| We will present the systematic study on nonadiabatic effect of strong-field tunneling ionization. Prof. Yunquan Liu obtained the PhD degree from the Institute of Physics, Chinese Academy of Sciences in 2006. Then he moved to Max-Planck-Institute for Nuclear Physics for the postdoc research in the period of 2006-2009. He joined Peking Unviersity as “Bairen Professor”. He was awarded “Distinguished Young Scientist” by National Science Foundation of China in 2011, “The Rao Yu-tai” by Chinese Optical Society (COS) in 2010, “Wang Xuan” for young Scientist in 2012 and “Wang Da-Heng” awards in 2013. In 2014, he was awarded “Cheung-Kong” Professor of Ministry of Education and “Young innovation talents of Science and technology” of Ministry of Science and Technology. He has published over 100 papers on international journals in the field of ultrafast physics.

TuJ2 16:10 Invited Ultrafast dynamics of electrons in strong-field ionization of molecules Jian. Wu, East China Normal University, Shanghai, CHINA| We demonstrate experimental observation of a Freeman resonance time delay of 140 ± 40 attoseconds between the photoelectrons emitted via different Rydberg states of Argon, the control of the rescattering of the freed electron by manipulating the waveform of the laser field, the photon-energy spaced above threshold dissociation spectrum and the dissociative frustrated double ionization of hydrogen molecules.

TuJ3 16:30 Invited Few-photon strong-field ionization Ulf. Saalmann, Q. Ning, M. Baghery, S. Giri, J. Rost, MPI fur Physik komplexer Systeme, Dresden, GERMANY| Ionization with strong and short pulses in the ultraviolet region offers more than just single-photon absorption. We review recently discovered physical phenomena in this new regime of light-matter interaction.

TuJ4 16:50 Invited Electron correlation from strong field ionization of noble gas atoms subject to intense laser field Wei. Quan, Y. Wang, X. Lai, X. Liu, WIPM, CAS, Wuhan, HUBEI, CHINA|X. Hao, W. Li, Shanxi University, Taiyuan, CHINA|W. Becker, Max Born Institut, Berlin, GERMANY|Y. Wu, J. Wang, J. Chen, Institute of Applied Physics and Computational Mathematics, Beijing, CHINA| Electron-electron correlation is revealed in nonsequential double ionization (NSDI) of noble gas atoms subject to intense laser fields experimentally and theoretically. A novel laser-induced inelastic diffraction scheme based on NSDI is proposed.

TuK Poster session I (ultrafast phenomena) Tuesday, April 24, 2018, TuK 17:10--18:30, Room 2 TuK1 Dissociative double ionization of Ar dimer in femtosecond laser fields of different light intensity P. Song, C. Meng, X. Wang, W. Dong, J. Liu, L. Liu, Z. Lu, D. Zhang, Z. Zhao, J. Yuan, National University of Defense Technolog, Changsha, HUNAN, CHINA| We experimentally studied the dissociative double ionization of Ar2 in femtosecond laser fields of different light intensity. The experimental results show a significant regulatory effect of light intensity to dissociative double ionization of Ar2. TuK2 Single-shot imaging of molecular structure using two-color orthogonally polarized fields C. Zhai, X. Zhang, X. Zhu, L. He, Y. Zhang, B. Wang, Q. Zhang, P. Lan, P. Lu, Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong Univ of Science and Technology, Wuhan 430074, CHINA|P. Lu, Laboratory of Optical Information Technology, Wuhan Institute of Technology, Wuhan 430205, CHINA| We report a single-shot molecular orbital tomography scheme with orthogonal two-color(OTC) fields. Using OTC fields, the two-dimensional motion of electron is controlled and the highest occupied molecular orbital of N2 is reconstructed in experiment. TuK3 Few cycle pulses IR laser system based on a bandwidth-optimized high energy Yb-doped fiber laser: Application to XUV generation M. Natile, A.I. Gonzalez, Amplitude Technologies, Lisses, FRANCE|L. Lavenu, M. Natile, M. Hanna, P. Georges, Laboratoire Charles Fabry, Institut d'Optique Graduate School, CNRS, Université Paris-Saclay, Palaisceau, FRANCE|L. Lavenu, F. Guichard, Y. Zaouter, E. Mottay, Amplitude Systèmes, Pessac, FRANCE|T. Ruchon, CEA LIDyL, CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, FRANCE| We report on an efficient few-cycle laser based on a high-energy Yb-doped fiber amplifier, delivering 14 fs, 120 µJ pulses at 200kHz. We drive HHG achieving a cutoff of 140eV with photon flux of 1012photons/s/eV. TuK4 Generation of intense few-cycle blue femtosecond laser pulses X. Fan, X. Wang, D. Zhang, J. Zeng, Department of Physics, National University of Defense Technology, Changsha, HUNAN, CHINA| We report second harmonic generation with BBO crystal from intense few-cycle infrared femtosecond laser pulses, we managed to get broadband phase-matching with 14.2% conversion efficiency, and the result ultraviolet spectra supports 7.0 fs pulses. TuK5 Research on The Carrier Density Threshold in The High-gain GaAs Photoconductive Semiconductor Switch at 4μJ Excitation S. wang, W. Shi, C. Dong, L. Yang, D. Duan, Xi’an University of Technology, Xi’an, SHaanxi, CHINA| The relationship between the carrier density threshold and the electric field is deduced, and a good correspondence is established between the theory and experimental results. TuK6 Low repetition rate tunable femtosecond pulses generated from a fiber optical parametric oscillator K. Yang, H. Li, P. Ye, Q. Hao, H. Zeng, Univ of Shanghai Science & Technology, Shanghai,Yangpu, SHanghai, CHINA| 33

We demonstrated generation of 800-kHz tunable femtosecond pulses from 970 to 1020 nm via a fiber optical parametric oscillator. The generated pulses could be used as a simple and flexible light source for biomedical applications. TuK7 Study of Correlated Excitation Dynamics of One-dimensional Model Helium W. Dong, L. Liu, J. Liu, Y. Huang, J. Zhao, Z. Zhao, National University of Defense Technology, Changsha, HUNAN, CHINA| We study the ionic excitation of helium system in strong laser fields. The simulation results show that the interplay of the electron-electron correlation, singly and doubly ionization and rescattering dynamics. TuK8 Femtosecond Fiber Laser Developed For Real-time Terahertz Spectrometer S. Cui, J. Chen, Y. Yuan, F. Sun, Huazhong Institute of Electro-Optics, Wuhan, HUBEI, CHINA|Y. Yuan, Hubei Jiuzhiyang Infrared System Co., Ltd, Wuhan, CHINA| A femtosecond fiber laser, which employs an environmentally stable all-PM seed and two fiber chirped pulse amplifiers, has been successfully developed and integrated in a 0.1–7 THz broadband real-time terahertz spectrometer. TuK9 Probing the charge carrier dynamics and photoconductivity of few-layer SnS2 by optical pump-THz probe spectroscopy W. Zhang, Q. Lu, S. Zhang, W. Zhao, L. Lv, X. Lin, Z. Jin, G. Ma, Shanghai University, Shanghai, CHINA|J. yao, Tianjin University, Tianjin, CHINA| By using optical-pump terahertz-probe spectroscopy, we investigated the photo-excited THz conductivity dynamics of CVD grown SnS2 laminate, which is a semiconducting 2D material with earth abundant, nontoxic constituent elements. TuK10 Positron generation via ultra-intense laser irradiating a tapered hollow foam-like target J. Liu, Y. Ma, T. Yu, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, Hunan, CHINA|J. Liu, Wuhan Electronic Information Institute, Wuhan, Hubei, CHINA| An improved scheme for high-flux, low-divergence and high-energy positrons generation is proposed. With a thick extra layer and a hollow cone, positron generation is enhanced, and the beam collimation and energy are well kept. TuK11 THz spectroscopy of terbium–scandium–aluminum garnet crystal and its application to ultrafast all-optical switching J. Li, J. Zhang, X. Lin, Z. Jin, G. Ma, Shanghai University, Shanghai, CHINA|X. Chen, N. Zhuang, Fuzhou University, Fuzhou, CHINA|Z. Zhang, Fudan University, Shanghai, CHINA|A. Wu, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, CHINA| We have used time-domain THz spectroscopy to study the electronic transition in the ground multiplet of TSAG crystal. In addition, by the time-resolved probe measurement to operate an all-optical magneto-optical switching in TSAG crystal. TuK12 Investigation on the dispersion compensation of femtosecond optical vortex generated by hologram grating Y. tu, Z. wang, D. Zhang, Z. Zhao, National University of Defense Technolog, CHANGSHA, HUNAN, CHINA| This paper presents a new method of dispersion compensation based on holographic grating plate combined with lens imaging system. In the experiment, we have produced a femtosecond vortex beam 34 with no mode distortion on the basis of the new method. TuK13 Non-adiabatic imprints on the lateral electron-momentum distribution of the low-energy structure in mid-infrared above-threshold ionization Z. Lin, L. Baoqing, Huaqiao University, XiaMen, Fujian, CHINA| We demonstrate the measured peculiar wavelength-dependent angular distributions (ADs) of the low-energy electrons are related to the non-adiabatic effects on the initial lateral electron-momentum distribution by using an improved semiclassical model.

TuK Poster session I (THz waves) Tuesday, April 24, 2018, TuK 17:10--18:30, Room 3 TuK14 Highly Efficient Terahertz Generation in a Circularly Polarized Two-Color Laser Field C. Meng, Xi'an Research Institute of High-tech, Xi'an, CHINA|Y. Tu, Q. Guo, Y. Huang, Z. Lu, X. Wang, C. Meng, D. Zhang, Z. Zhao, J. Yuan, National University of Defense Technology, Changsha, CHINA|J. Yuan, Graduate School of China Academic of Engineering Physics, Beijing, CHINA| We experimentally demonstrate that the optical-to-THz conversion efficiency in circularly-polarized two-color laser fields is higher than that in linearly-polarized two-color system. TuK15 Broadband Terahertz Quantum Cascade Laser with Radio Frequency Modulation W. Wan, H. Li, J. Cao, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, CHINA| We present broadband quantum cascade lasers emitting around 4.3 THz. A low beam divergence of 3° is achieved by using Silicon lens, and homogenous spectral broadening over 300 GHz is obtained with radio frequency modulation. TuK16 Research on Envelope Correction of Precession Cone Targets in the Terahertz Band Q. Yang, H. Wang, B. Deng, Y. Qin, H. Zhang, National University of Defense Technolog, Changsha, Hunan, CHINA| An envelope correction method based on multi-layer perceptron for ballistic missile targets in the terahertz region was proposed. Then a 330GHz imaging radar was introduced and experiment on a precession cone model was carried out. TuK17 Preliminary measurement of the characters of CAEP THz free electron laser D. Wu, P. Li, P. Zhang, M. Li, Institute of Applied Electronics, Mian, SiChuan, CHINA| This paper presents the preliminary measurement of the CAEP THz free electron laser, including macro-pulse power, duty cycle, beam transvers profile, beam length, etc. TuK18 Ultrafast THz probe of photoexcited free charge carriers in CH3NH3PbI3 and CH3NH3PbI3/Spiro-OMeTAD perovskites W. Zhao, H. Yan, X. Lin, Z. Jin, G. Ma, Shanghai University, Shanghai, CHINA|Z. Ku, Wuhan University of Technology, Wuhan, CHINA| We have used transient terahertz (THz) photoconductivity measurements to demonstrate that upon optical excitation of CH3NH3PbI3 perovskite, the hole transfers from CH3NH3PbI3 into organic hole-transporting material (HTM) Spiro-OMeTAD. TuK19 Phase Transition from CsPbBr3 into CsPb2Br5 during Size Increasing of Perovskite Nanocrystals Observed by Terahertz Time-Domain Spectroscopy H. Shi, X. Zhang, X. Sun, X. Zhang, South University Of Science And Technolo, Shenzhen, GUangDong, CHINA| The phase transition of perovskite nanocrystals during nanocubes-nanoplates size increasing is evidenced by the different terahertz transmission results. This help to study the application of perovskite as terahertz functional devices. TuK20 36

Generation and Characterization of a THz Bottle Beam H. Li, X. Wang, W. Sun, S. Feng, P. Han, J. Ye, Y. Zhang, Capital Normal University, Beijing, BEIJING, CHINA|S. Wang, Shandong Normal University, Jinan, CHILE| Terahertz (THz) bottle beams are generated by using a silicon lens and a Teflon axicon. The evolutions of the transverse (Ex) and longitudinal (Ez) electric fields are coherently measured and simulated of the phenomena. TuK21 High power 4.4 THz quantum cascade lasers and its application in higher resolution imaging T. Jiang, C. Shen, Z. Zhan, R. Zou, X. Wang, W. Li, Q. Deng, W. Wu, Research Center of Laser Fusion CAEP, MianYang, SICHUAN, CHINA| We present our research on the fabrication of high power THz QCLs with frequency at 4.4 THz and its application on the holographic imaging. With application of the THz QCL, the lateral resolution in holographic imaging system can reach 80μm. TuK22 The correction of THz-time domain reflection spectroscopy of SrTiO3 Q. Guo, D. Zhang, J. Yuan, National University of Defense Technology, Changsha, Hunan, CHINA|J. Yuan, Graduate School of China Academic of Engineering Physics, Beijing, CHINA| The experimental results of SrTiO3 from 0.3THz to 6THz shows that an analytic continuation of the complex reflection can reduce the impact of limited spectra so that a more accurate correction can be acquired. TuK23 The influence of humidity and PM2.5 on the communication performance of terahertz system Z. Xiong, J. He, B. Zhang, B. Su, C. Zhang, Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Ministry of Education; Beijing Key Laboratory for Terahertz Spectroscopy and Imaging; Beijing Advanced Innovation Center for Imaging Technology, Beijing, CHINA| In this paper, we explore the influence of humidity and PM2.5 on communication quality in terahertz communication system, and provide theoretical reference for selecting proper channel parameters for terahertz wireless communication. TuK24 Terahertz Spin Emitter D. Kong, T. Nie, C. Ruan, W. Zhao, X. Wu, School of Electronic and Information Engineering, Beihang University, Beijing, CHINA|B. Wang, L. Wang, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics,Chinese Academy of Sciences, Beijing, CHINA|B. Wang, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, CHINA|T. Nie, W. Zhao, Fert Beijing Institute, BDBC, Beihang University, Beijing, CHINA| We demonstrate efficient and broadband terahertz generation from magnetic nanofilms pumped by femtosecond laser pulses, which can be used as sources for spectroscopy and has the capability for strong-field terahertz induced nonlinear investigations. TuK25 An Ultrasensitive Dual-band Terahertz Metamaterial Microfluidic Sensor F. Feng Luo, University of Electronic Science and Tec, Chengdu, SiChuan, CHINA| We present an novel high sensitivity dual-band terahertz metamaterial microfluidic sensor,which shows a nearly perfect absorption and perfect spatial overlap between the analytes and the electric field,and exhibits promising application in biosensing TuK26 Plasmonic Analog of Electromagnetically Induced Transparency Based on Terahertz Stereo 37

Metamaterials L. Dachuan, The 53rd Research Institute of CETC, Tianjin, TianJin, CHINA|Z. Huifang, J. Gu, Y. Li, Z. Tian, O. Chunmei, J. Han, W. Zhang, Tianjin University, Tianjin, CHINA| A novel THz stereo PIT metamaterial TuK27 Influence of the bandwidth of two incident pulses on two-dimensional terahertz spectroscopy F. Xiang, K. Wang, Z. Yang, J. Liu, Wuhan National Lab. for Optoelectronics, Wuhan, HUBEI, CHINA| The influence of the bandwidth of two incident terahertz pulses on two-dimensional terahertz spectroscopy has been studied theoretically via a classical method. This study is promising for guiding experiments using different terahertz sources. TuK28 Terahertz biosensing metasurface for virus detection based on spoof surface plasmon polaritons D. Cheng, G. Liu, Y. Luo, B. Zhang, Y. Chen, Y. Lin, Y. Wang, Z. Dang, University of Electronic Science and Technology of China, ChengDu, CHINA|G. Shu, Shenzhen University, ShenZhen, CHINA| Planar Jerusalem cross metasurface for different virus detection based on spoof surface plasmon polaritons (SSPPs) in Terahertz (THz) band is investigated, which shows great significance on the contagious and time-sensitive target virus. TuK29 Active Modulation of Coupled-Cavity Terahertz Quantum Cascade Lasers for Sideband generation Z. Li, H. Li, W. Wan, K. Zhou, T. Zhou, J. Cao, Chinese Academy of Sciences, Key Laboratory of Terahertz Solid-State Technology, Shanghai, CHINA|Z. Li, H. Li, W. Wan, K. Zhou, T. Zhou, J. Cao, Chinese Academy of Sciences, Shanghai Institute of Microsystem and Information Technology, Shanghai, CHINA| We experimentally demonstrate that the coupled-cavity terahertz quantum cascade lasers can be actively modulated to generate sidebands under injecting frequencies that are equal to the harmonics of the difference frequency between transverse modes. TuK30 Polarization splitting based on the orthogonally exotic I-shaped H. Zeng, University of Electronic Science and Technology, Chengdu, CHINA| We designed an orthogonally exotic I-shaped metamaterial that controls the reflection phase of different polarizations independently. Greatly improve the ability of phase adjustment to different polarized beams. TuK31 Tunable Terahertz Perfect Absorber Based on Spatially Separated Double-layer Graphene R. Yang, X. Wei, NUDT, Changsha, Hunan, CHINA| We theoretically proposed a perfect absorber operating in terahertz wavelength based on spatially separated double-layer graphene with the upper layer of graphene patterned with periodical holes, which facilitates active tuning plasmonic devices. TuK32 New Trigger Signal Triggering Method Based on Asynchronous Scanning System X.Y. wu, B. Su, X. Wu, J. He, S. Zhang, C. Zhang, Capital Normal University, Beijing, BEIJING, CHINA| Asynchronous high-speed scanning system is a new technology for terahertz time-domain spectroscopy system. Compared with the conventional that based on mechanical delay lines, it offers the advantages of high spectral resolution and fast scanning. TuK33 Active bidirectional control hybrid based on organic materials for terahertz waves W. wang, Capital Normal University, Beijing, CHINA| 38

With optical and electrical excitations, we experimentally demonstrated active bidirectional modulation for terahertz consisting of MEH-PPV/Pedot:Pss/Si/Pedot:Pss structure and obtained bidirectional transmission modulation from -54％ to 60％. TuK34 An active optically controlled broadband terahertz modulator based on Fe3O4 nano-particles L. Xiong, B. Zhang, H. Ji, W. Wang, X. Liu, J.L. Shen, Capital Normal University, Beijing, BeiJIng, CHINA| We report an active easily fabricated broadband terahertz modulator based on Fe3O4 nano-particles/Si structure,for which as high as 92% modulation depth was achieved at an external excitation laser of 3.6 W/cm2. TuK35 Detecting Terahertz Continuous Wave Using Weakly Ionized Plasma L. Hou, W. Shi, Xi'an University of Technology, Xian, SHAANXI, CHINA| In this paper, we designed a THz continuous wave detector using weakly ionized plasma generated by discharging inert gas. Some applications of the weakly ionized plasma detector in THz wave detection and imaging were demonstrated. TuK36 High-resolution CW Terahertz Spectroscopy of Nanogap Terahertz Metamaterials M. Xiao, D. KONG, K. Chen, C. Ruan, X. Wu, School of Electronic and Information Engineering, Beihang University, Beijing, CHINA|B. Quan, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, CHINA| High-resolution CW terahertz spectroscopy of nanogap metamaterials with different polarization excitation is characterized.The combination of the results from two orthogonal linear polarizations is proportional to that from the circular polarization. TuK37 Electrically tuned transmission properties of cutwire-BTO-Si hybrid structure in terahertz range S. Zhou, J. Ji, Y. Tian, F. Ling, W. Yu, Huazhong Univ of Science and Technology, Wuhan, Hubei, CHINA| Transmission and dielectric properties of the cutwire-BTO-Si hybrid structure were characterized. There is a dip in the transmission spectra due to LC resonance. The electric field could tune the transmission and dielectric property effectively. TuK38 Energy relaxation in scattering-assisted terahertz quantum cascade lasers F. Wang, SIMIT, CAS, Shanghai, ShangHai, CHINA| The optoelectronic system is simulated self-adaptively. Calculated electronic temperatures and energy relaxation times in the lasing-establishment process from unsaturated to saturated states, are in good agreement with experimental results. TuK39 All-optical Terahertz Modulation Based on WSe2-silicon Hybrid Structures C. XIA, School of Automation Science and Electrical Engineering, Beihang University, Beijing, CHINA|Z. Fang, X. Wu, School of Electronic and Information Engineering, Beihang University, Beijing, CHINA|Y. Huang, B. Wang, L. Wang, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, CHINA|B. Wang, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, CHINA|Z. Li, Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, GERMANY| We experimentally demonstrate an all-optical modulation for terahertz waves based on an atomic monolayer WSe2-silicon hybrid structure. Compared with the modulation from naked silicon substrate, the modulation depth is scaled up by ~40%. 39

TuK40 Analysis of Terahertz Transmission in Aging of Natural Rubber Products X. zhang, J. Gao, Qilu University of Technology (Shandong Academy of Sciences), JINAN, Shandong, CHINA| Natural rubber product is aged for about 1000 hours in a hot oxygen environment at 100°C. The attenuation characteristics of 0.325-0.5 THz are tracked every 24 hours. TuK41 Preparation of VO2 thin films by sol - gel method and its terahertz modulation characteristics Z.X. Shi, H. Wang, J. He, B. Su, C. Zhang, Capital Normal University, Beijing, BEIJING, CHINA| VO2 thin films were prepared on silica wafer by sol-gel method and spin coating technology. The insulator metal phase transformation characteristics of thin films were analyzed by terahertz time-domain spectroscopy, showing a good modulation effect. TuK42 Generation of Terahertz Hollow-Gaussian Beams from Two-Color Vortex Laser-Induced Gas-Plasma H. Wang, E. Wu, Z. Wang, Tongji University, Shanghai, CHINA|H. Wang, Y. Bai, E. Wu, P. Liu, C. Liu, Shanghai Inst of Optics & Fine Mechanics, Shanghai, CHINA| A method for generating terahertz (THz) hollow-Gaussian beam without orbital angular monument (OAM) from two-color vortex laser-induced gas-plasma is proposed and theoretically confirmed. TuK43 Active Fano-resonant metasurface device based on graphene monolayer in the terahertz regime Q. Li, S. Wang, T. Xu, School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin, Tianjin, CHINA|Q. Li, S. Wang, National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die & Mould, Tianjin University of Technology and Education, Tianjin, Tianjin, CHINA| We demonstrate an active Fano-resonant metasurface device that consists of a monolayer graphene and symmetry broken Fano resonators. A large modulation up to 89% was experimentally observed by simultaneous CW optical pump and electrical gating. TuK44 Cocrystallization within Gamma-aminobutyric Acid and Benzoic Acid Based on Terahertz and Raman Spectroscopy X. Huang, Q. Zhang, Q. Cai, Y. DU, China Jiliang University, Hangzhou, ZHEJIANG, CHINA| Vibrational spectroscopic methods, including terahertz and Raman spectroscopy, were utilized for the characterization and analysis of gamma-aminobutyric acid (GABA), benzoic acid (BA), and the corresponding GABA-BA cocrystal formation. TuK45 A SI-GaAs photoconductive array antenna based on self-focusing microlens C. Dong, W. Shi, S. wang, L. Yang, L. Wang, Xi'an University of Technology, Xi'an, SHaanxi, CHINA| The GaAs photoconductive antenna (GaAs PDA), that is still a problem to improving the radiation power of GaAs PDA. In order to improve the radiation power, we have studied the unit antenna and GaAs PDA array, adapted to the terahertz research needs. TuK46 Investigation of Electrical and Optoelectronic Properties of CdSxSe1-x nanobelts by using THz spectroscopy H. Liu, L. Ke, Institute of Materials Research& Engineering, Singapore, SINGAPORE| In this work, composition-dependent electron transport, ultra-high photoconductivity and carrier dynamics of CdSxSe1-x nanobelts have been studied by using optical-pump THz-probe spectroscopy. 40

TuK47 Terahertz dielectric response and optical conductivity of layered MoS2 H. Li, X. Zhang, Southern Univ of Science & Technology, Shenzhen, GUANGDONG, CHINA|H. Li, Z. Tang, IAPME, UM, Macau, MACAO| Both THz-TDS of multilayer and monolayer MoS2 are studied. A series of frequency dependent parameters are calculated in the frequency range of 0.2 to 2.25 THz. The optical conductivity are analyzed by Drude model. TuK48 A 300GHZ Standard Waveguide Loaded Artificial Microstructure Phase Shifter Shi Jinxin1, 1. Terahertz Research Centre, School of Phys., Chengdu, SICHUAN, China. This paper presents a terahertz(THz)-wave 280GHz-340GHz phase shifter. Get the maximum phase shift exceeds 100 °, the phase shift accuracy is less than 10 °, the average insertion loss is less than 1.3dB. TuK49 Terahertz frequency-tunable device based on interference by photo-excitation of polymer/silicon hybrid structure D. Liu, B. Zhang, W. Wang, H. Ji, G. Wang, J.L. Shen, Capital Normal University, Beijing, CHINA| When the terahertz beam passes through the sample edge, equally-spaced interference fringes are obtained in the frequency domain, and the interference fringes can be varied using an external continuous wave laser.

WA Plenary session II

Wednesday, April 25, 2018, WA 8:30--10:00, Room 1 Peiheng Wu, Nanjing University, China, Presider

WA1 8:30 Plenary Progress in ultrafast terahertz scanning tunneling microscopy Frank. Hegmann, University of Alberta, Edmonton, Alberta, CANADA| The ability to directly probe ultrafast phenomena on the nanoscale is essential to our understanding of excitation dynamics on surfaces and in nanomaterials. Recently, a new ultrafast scanning tunneling microscope (STM) technique that couples terahertz (THz) pulses to the scanning probe tip of an STM was demonstrated (THz-STM), showing photoexcitation dynamics of a single InAs nanodot with simultaneous 0.5 ps time resolution and 2 nm spatial resolution under ambient conditions. Operation of THz-STM in ultrahigh vacuum now makes it possible to spatially-resolve subpicosecond dynamics of single molecules and silicon surfaces with atomic precision. This talk will discuss how THz-STM works, recent progress, and how THz-STM can provide new insight into ultrafast dynamics on the atomic scale, which is essential for the development of novel silicon nanoelectronics and molecular-scale devices operating at terahertz frequencies.

WA2 9:15 Plenary High energy and high efficiency chirped pulse amplifiers in 10 PW laser Xiaoyan. Liang, Z. Gan, W. Li, L. Yu, Y. Liu, C. Wang, Y. Hang, Y. Leng, R. Li, Z. Xu, Shanghai Inst of Optics & Fine Mechanics, Shanghai, Shanghai, CHINA| A high energy and efficiency amplifier in SULF laser was demonstrated with output energy of 339J, which contained a Ti:Sapphire crystal with diameter of 235mm. After compression, the peak power of 10.3 PW was achieved.

WB Terahertz application Wednesday, April 25, 2018, WB 10:20--12:00, Room 1 Hongqiang Wang, National University of Defense Technology, China, Presider

WB1 10:20 Keynote Development of Superconducting Mixers and Detectors for the DATE5 Telescope Shengcai. Shi, Purple Mountain Observatory, Nanjing, JIangSu, CHINA|S. Shi, Key Lab of Radio Astronomy, Nanjing, China, CHINA| China is planning to construct a 5-m THz telescope (DATE5) at Dome A, Antarctic. This talk will introduce our FTS atmospheric measurement results from Dome A, and the latest development of superconducting mixers and detectors for the DATE5. S. Shi received his B.S. degree from Southeast University, China, in 1985, M.S. degree from Graduate School of Chinese Academy of Sciences, China, in 1988, Ph.D. degree in radio astronomy from the Graduate University for Advanced Studies, Japan, in 1996. His research interests include physics of superconducting devices, THz mixers and detectors, and THz applications. WB2 10:50 Invited Liquid-Crystal-Enabled Magnetically and Electrically Tunable Achromatic Quarter-Wave Plates Ciling. Pan, National Tsing Hua University, Hsinchu City, TAIWAN| We review progress in THz achromatic quarter-wave plates that can be tuned using magnetically or electrically tuned birefringence of liquid crystals. WB3 11:10 Invited Synthesis of the Scattering Features of THz Waves via Metasurfaces Qiang. Cheng, J. Zhao, C. zhang, Southeast University, Nanjing, CHINA| Here we will report some recent progress in controlling the THz scattering features via metasurfaces, which is beneficial for future applications of novel THz antennas, imaging and radar systems. WB4 11:30 Contributed Vehicle-borne THz-SAR Imaging Based on Azimuth Doppler Rate Estimation Q. Liu, H. Wang, Bin. Deng, Y. Zhang, Q. Yang, J. Gao, H. Zhang, National University of Defense Technolog, Changsha, HUNAN, CHINA| An imaging method based on the azimuth Doppler rate estimation of the vehicle-borne THz-SAR is proposed. The method can avoid the distance error interference efficiently and obtain an imaging result with a higher azimuth resolution. WB5 11:45 Contributed THz Hyperspectral Images Analyzed by Multivariate Statistical Methods Pu. Zou, O. Peters, C. Gleichweit, R. Holzwarth, Menlo Systems GmbH, Martinsried, GERMANY|H. Lohninger, Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna, AUSTRIA| Images recorded using Terahertz Time-Domain Spectroscopy contain huge amounts of data, of which only a part may contain chemical and structural information. Using powerful hyperspectral image analysis, we extract both information efficiently.

WC Terahertz science and technology in micro and nano-structures II Wednesday, April 25, 2018, WC 10:20--12:00, Room 3 Guohong Ma, Shanghai University, China, Presider WC1 10:20 Keynote Single-Cavity, Dual-Comb Ultrafast Fiber Lasers and Their Terahertz Dual-Comb Metrology Applications X. Zhao, G. Hu, Zheng. Zheng, School of Electronic and Information Engineering, Beihang University, Beijing, BEIJING, CHINA|Z. Zheng, Beijing Advanced Innovation Center for Big Date-based Precision Medicine, Beijing, CHINA|T. Yasui, Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, JAPAN|T. Yasui, JST, ERATO, MINOSHIMA Intelligent Optical Synthesizer Project, Tokushima, JAPAN| Dual-comb mode-locked fiber lasers emitting asynchronous pulse trains have emerged as alternative, low-complexity dual-comb sources. We demonstrate that terahertz time-domain spectroscopy and frequency characterization could benefit from such lasers. Prof. Zheng Zheng received his Bachelor's degree from Tsinghua University and MSEE and Ph.D. degrees from Purdue University. He was an MTS with Lucent Technologies, NJ before he joined Beihang University in December 2003. He is a Fellow of Chinese Institute of Electronics, and IEEE and OSA member. WC2 10:50 Invited Inversionless Terahertz Gain in Semiconductor Superlattices up to Room Temperature and above Takeya. Unuma, A. Matsuda, A. Naka, Nagaoka University of Technology, Nagaoka, Niigata, JAPAN|K. Hirakawa, University of Tokyo, Meguro-ku, Tokyo, JAPAN| We investigate temperature-dependent complex conductivity spectra of GaAs-based superlattices by terahertz emission spectroscopy under bias electric field. We provide direct evidence for inversionless terahertz gain up to room temperature and above. WC3 11:10 Invited Nonlocal transistor based on a EuO-graphene/superconductor hybrid structure Chao. Zhang, University of Wollongong, Wollongong, New South Wales, AUSTRALIA|Y. Ang, L. Ang, Singapore University of Technology and Design, Singapore, SINGAPORE|Z. Ma, Peking University, Beijing, CHINA| We show that pure crossed Andreev reflection can be generated in an N/S/N device. This allows the device acts as a highly tunable transistor that operates purely in the non-local transport regime. WC4 11:30 Contributed THz Radiation via Inverse Rashba-Edelstein effect Jingbo. Qi, Univ of Electronic Sci & Tech of China, Chengdu, SICHUAN, CHINA| Using the inverse Rashba-Edelstein effect, we demonstrate a novel type of strong broadband THz emitter composed of ferromagnetic metallic heterostructures. The emitted THz wave has a bandwidth dominating ~0.1-5 THz. WC5 11:45 Contributed Propagation of the Blackbody Radiation in a Periodic Metamaterial Peter. Lerner, Wenzhou Kean University, Wenzhou, ZHEJIANG, CHINA|P.B. Lerner, SciTech, LLC, State College, Pennsylvania, UNITED STATES| Partially coherent beam passing through a periodic lattice retains its coherence on propagation at the Talbot distance. Potentially infinite enhancement of spatial coherence of a blackbody radiation by a metamaterial can be used for THZ detection.

WD High-field physics and attosecond science III Wednesday, April 25, 2018, WD 10:20--12:00, Room 2 Liangyou Peng, Peking University, China, Presider WD1 10:20 Keynote An anatomy of strong field ionization induced air lasing J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, Ya. Cheng, State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, CHINA|Y. Cheng, School of Physics, Chinese Academy of Sciences, Beijing, CHINA| Tunnel ionization of nitrogen molecules with mid- and near-infrared intense laser fields can initiate lasing actions at various wavelengths. The physical mechanisms behind the observation will be discussed in this talk. Ya Cheng is a professor of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (CAS). He is also a professor of East China Normal University (ECNU), and currently serves as the Dean of the School of Physics and Materials Science, ECNU. He received a BS degree from Fudan University in 1993 and a PhD degree from the Shanghai Institute of Optics and Fine Mechanics, CAS in 1998. His research focuses on ultrafast nonlinear optics and strong field laser physics. He has co-authored more than 200 papers in peer reviewed journals, which have been cited more than 5000 times. His current H-index reaches 39 based on Web of Science. He is a Fellow of the Institute of Physics, UK. WD2 10:50 Invited Neutral excitation of atoms and molecules induced by ultrafast strong laser fields Haifeng. Xu, Jilin University, Changchun, JILIN, CHINA| We perform joint experimental and theoretical studies on neutral Rydberg state excitation (RSE) induced by 50-fs 800-nm strong laser fields, for both atoms and molecules. Possible mechanism and molecular-structure effect of RSE are discussed WD3 11:10 Invited High-harmonic spectroscopy of electron-hole dynamics induced by strong-field ionization Jing. Zhao, J. Yuan, Z. Zhao, National University of Defense Technolog, Changsha, HUNAN, CHINA| We propose an IR-pump-XUV-probe scheme to investigate multi-electron-hole coherence. Using the laser-induced ionization as a gate for XUV excitation of core electrons provides us the opportunity to probe both the core and valence electron dynamics. WD4 11:30 Contributed Intra- and inter-band transitions in high harmonic generation from solids T. Du, G. Jia, Xuebin. Bian, Wuhan Institute of Physics & Mathematics, WUHAN, HUBEI, CHINA|G. Jia, Henan Normal University, Xinxiang, CHINA|T. Du, University of Chinese Academy of Sciences, Beijing, CHINA| A step-by-step model in k space was proposed to reveal the mechanisms of high harmonic generation in solids. Inter- and intraband dynamics correspond to local and global oscillations of wavepackets at phase and group velocities, respectively. WD5 11:45 Contributed Energy-dependent angular shifts in atomic ionization by elliptically polarized laser pulses Min. LI, Huazhong Univ of Science and Technology, Wuhan, HUBEI, CHINA| We measured photoelectron momentum distributions of atoms in elliptically polarized laser fields. We found distinct energy-dependent angular shifts, which come from the ionization time delays among the electrons with different energies. 45

WE Plenary session III

Wednesday, April 25, 2018, WE 13:30--15:00, Room 1 Xi-Cheng Zhang, University of Rochester, USA, Presider

WE1 13:30 Plenary Recent Progress on terahertz source, modulation and its applications Jianquan Yao, Tianjin University, Tianjin, China The development of terahertz (THz) source and modulation facilitates a wider variety of applications. This talk addresses our recent researches on THz sources based on THz parametric oscillator and difference frequency generation and proposes a novel modulation technology that combines the modulation of both the THz sources and devices. The works of THz applications in biomedical diagnostics by transmission imaging, attenuated total reflection imaging and metamaterial based biosensors are described as well, followed by summarization of the recent progress and prediction of the future trends of THz technology.

WE2 14:15 Plenary Generation, Characterization, and Applications of Single-cycle Laser Pulses Kyung Taec. Kim, Institute for Basic Science, Gwangju, KOREA (THE REPUBLIC OF) New methods for the generation and characterization of a single cycle laser pulse are presented. The applications of the single cycle laser pulse on high harmonic generation and frustrated tunneling ionization are also discussed.

WF Terahertz QCL

Wednesday, April 25, 2018, WF 15:20--17:15, Room 1 Chao Zhang, Wollongong University, Australia, Presider

WF1 15:20 Keynote Terahertz semiconductor quantum devices and their applications Juncheng. Cao, Shanghai Inst. Microsys. & Info. Tech., Shanghai, CHINA| We demonstrate the transmission of real-time audio/video signal by using the THz QCL as a source in continuous wave (cw) mode and the THz QWP as a receiver. jProf. J. C. Cao received the Ph.D. degree in electrical engineering from the Southeast University, Nanjing, China, in 1994. He is currently the Terahertz (THz) group leader of the Key Laboratory of Terahertz Solid-State Technology at Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, China. His current research interests include THz semiconductor quantum devices and their applications in THz communication and imaging.

WF2 15:50 Invited The noise and modulation behaviors of Terahertz Quantum Cascade Lasers Weidong. Chu, Inst Appl Physics & Computat Mathematics, Beijing, BEIJING, CHINA| We studied the relative intensity noise and modulation properties of free-running, optical master-slave injection and mutual injection THz-QCLs based on a three-level rate equation approach.

WF3 16:10 Invited Terahertz Quantum Cascade Laser Frequency Comb and Fast Detection Hua. Li, J. Cao, Chinese Academy of Sciences, Shanghai, CHINA| We report the homogeneous spectral spanning of terahertz QCL frequency comb characterized by a kHz level frequency stability and fast terahertz detection using a terahertz quantum well photodetector with a bandwidth upto 6 GHz.

WF4 16:30 Contributed

Terahertz surface emission spectroscopy of layered MoS2 crystal: from surface optical rectification to ultrafast photocurrent Yuanyuan. Huang, L. Zhu, Z. Yao, L. Zhang, C. He, Q. Zhao, X. Xu, Northwest University, Xi'an, CHINA|

Terahertz radiation of layered MoS2 crystal under linear and circular polarized femtosecond laser excitations was observed, and the surface optical rectification, photocurrent surge, as well as the helicity dependent photocurrent were demonstrated.

WF5 16:45 Contributed Multi-frequency terahertz surface wave lens based on double-layer metallic slit pairs Minggui. Wei, X. Zhang, Y. Li, J. Gu, Z. Tian, J. Han, W. Zhang, Tianjin University, Tianjin, TIANJIN , CHINA|W. Zhang, Oklahoma State University, Stillwater, Oklahoma, UNITED STATES| Here a surface wave lens (SWL) working at 0.6, 0.75 and 1 THz is demonstrated by using double-layer slit pairs to simultaneously stimulate the surface wave and control their wavefronts by rotating the slit pairs.

WF6 17:00 Contributed 47

Silicon-based Terahertz Modulation and its Mechanisms Zhaoji. Fang, C. XIA, D. KONG, C. Ruan, X. Wu, Beihang University, Beijing, BeiJIng, CHINA|Z. Li, Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, GERMANY|N. Medvedev, Institute of Physics AS CR, v.v.i., Prague, CZECHIA|N. Medvedev, Institute of Plasma Physics AS CR, v.v.i., Prague, CZECHIA|B. Wang, L. Wang, Chinese Academy of Sciences, Beijing, CHINA|B. Wang, University of Chinese Academy of Sciences, Beijing, CHINA| All-optical silicon-based terahertz amplitude modulation is experimentally and theoretically investigated. Modulation depth >95% is achieved in 0.3-1.5 THz, which agrees well with Drude model, while plasmon resonance is employed in 0.05-0.3 THz.

WG Terahertz science and technology in micro and nano-structures III

Wednesday, April 25, 2018, WG 15:20--17:15, Room 3 Weiwei Liu, Nankai University, China, Presider

WG1 15:20 Keynote Terahertz science of discrete and extreme matter Alexander. Shkurinov, Moscow State University, Moscow, RUSSIAN FEDERATION| We present results of our research on generation of terahertz radiation in liquid-like media, such as gas clusters and liquefied gas, under the action of high power femtosecond laser pulses. Alexander Shkurinov graduated in 1985 with honors from the M.V. Lomonosov Moscow State University (MSU). Since 2004 he is a full-time Professor at the Department of Physics of the M.V.Lomonosov Moscow State University, Moscow Russia where he is Head of the Laboratory of ultrafast processes in Biology. The research interests of Alexander Shkurinov are mainly centered around the development and application of femtosecond laser techniques, time-resolved spectroscopy of molecules in liquid phase, nonlinear optics and THz techniques and spectroscopy. The results obtained by Alexander Shkurinov have been published in more than 100 scientific papers in peer-reviewed journals. Throughout his career Alexander Shkurinov has been participating and been part of advisory boards, organizing and program committees of numerous international conferences. In 2008 The Russian Optical Society awarded Alexander Shkurinov with the Medal in honor of Prof. Rozhdestvensky for his contribution into the development of optical science and technology.

WG2 15:50 Invited Metasurfaces for broadband terahertz linear polarization rotation and linear-to-circular polarization conversion Houtong. Chen, Los Alamos National Laboratory, Los Alamos, New Mexico, UNITED STATES| We show metasurfaces consisting of few-layer anisotropic structures that allow for highly efficient and broadband terahertz linear polarization rotation and linear-to-circular polarization conversion, operating either in reflection or transmission.We show metasurfaces consisting of few-layer anisotropic structures that allow for highly efficient and broadband terahertz linear polarization rotation and linear-to-circular polarization conversion, operating either in reflection or transmission.

WG3 16:10 Invited Fast THz Modulator based on the stagger-netlike metamaterial array nested with GaN HEMT Yaxin. Zhang, Universityo Electronic Sci&Tech of China, Chengdu, SICHUAN, CHINA| In this talk, we present a composite stagger-netlike metamaterial THz modulator that combines optimized metallic metasurface with AlGaN/GaN heterostructure array to improve modulation speed and depth. In the SMMTM, feeder circuits are simplified as far as possible and ingeniously integrated into metamaterial structure, which significantly reduced parasitic factors of the modulator. By electrically controlling the carrier concentration of 2DEG, resonant mode conversions between two different analogous dipolar resonances have been realized. In real-time dynamic tests, this THz spatial modulator achieves 93% modulation depth and 3 GHz modulation speed.

WG4 16:30 Contributed Joint Measurement of THz Wave and Third-Harmonic Generation of Laser Filamentation in Air K. Zhang , Y Jiang, University of Chinese Academy of Sciences, Beijing 100049, CHINA/ K. Zhang , Y. Zhang, Tianming. Yan, Y Jiang, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, CHINA/ Y. Zhang, Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Opto-electronics Information and Technical Science, Ministry of Education, Tianjin University, CHINA/ Y Jiang, School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, CHINA The origin of THz generation in dual-color laser fields is investigated by joint measurement of THz and third-harmonic generation, showing the single-atom-ionization determined THz wave is modulated by photocurrent behavior.

WG5 16:45 Contributed Efficient terahertz radiation based on inverse spin Hall effect in W/CoFeB/Pt heterostructures Shunnong. Zhang, Z. Jin, X. Lin, G. Ma, Shanghai University, Shanghai, CHINA|W. Zhu, Z. Zhang, Fudan University, Shanghai, CHINA|J. yao, Tianjin University, Tianjin, CHINA| We report the efficient broadband THz radiation in the metallic ferromagnetic W/CoFeB/Pt trilayer heterostructures, upon irradiation of a fs laser pulse, which can be interpreted by a non-local spin current pulses based on inverse spin Hall effect.

WG6 17:00 Contributed Optically tuned optical properties of ferroelectric superlattice by THz spectroscopy Jie. Ji, S. Zhou, Q. Chen, F. Ling, J. yao, Huazhong Univ of Science and Technology, Wuhan, HUBEI, CHINA|J. yao, Tianjin University, Tianjin, CHINA| Optical properties of ferroelectric superlattice film with different optical powers were characterized by THz spectroscopy. Tunability of transmission could be tuned by 90.1%. Refractive index and absorption coefficient was also varied along with it.

WH Ultra high intensity laser and its application

Wednesday, April 25, 2018, WH 15:20--17:15, Room 2 Jiansheng Liu, Shanghai Inst of Optics and Fine Mech, China, Presider

WH1 15:20 Keynote Insight into laser-molecule interaction: from electronic structure to nuclear dynamics P. Lan, L. He, Y. Zhou, Peixiang. Lu, Huazhong Univ of Science and Technology, Wuhan, HUBEI, CHINA|P. Lan, Wuhan Institute of Technology, , Wuhan, CHINA| High-order harmonic generation from molecules has been investigated in experiment. With the high-harmonic spectroscopy method, we have achieved the tomographic imaging of molecular orbital, attosecond probing of nuclear motion, and real-time observation of molecular spinning.

WH2 15:50 Invited High Power Mid-Infrared Laser by DC-OPA Eiji. Takahashi, RIKEN, Wako, SAITAMA, JAPAN| We report the generation of high-power tunable mid-infrared laser pulses at 1 - 4 μm region with duration of less than 70 fs, by a dual-chirped optical parametric amplification (DC-OPA) scheme.

WH3 16:10 Invited Table-top Laser-driven microwire for Intense Terahertz radiation Ye. Tian, J. Liu, Chinese Academy of Sciences, Jiading, ShangHai, CHINA| We propose a novel terahertz source based on a femotosecond laser-driven microwire. This scheme can produce intense THz sources with a conversion efficiency of 1%.

WH4 16:30 Contributed Resonance-Enhanced Harmonics from Air Plasma Pumped by Mid-Infrared Femtosecond Pulses Yi. Liu, R. Danylo, A. Houard, A. Mysyrowicz, Laboratoire d'Optique Appliquée, Palaiseau Cedex , FRANCE|Y. Liu, R. Danylo, Q. Liang, Z. Fan, X. Zhang, University of Shanghai for Science and Technology, Shanghai, CHINA|M. Lei, A. Zhang, H. Jiang, C. Wu, Q. Gong, Peking University, Beijing, CHINA|V. Tikhonchuk, Université de Bordeaux, Bordeaux, FRANCE| Air pumped by mid-infrared femtosecond pulses gives rise to coherent emission at 391/428 nm. Based on ellipticity dependence measurement and time-resolved characterization, we attribute this emission to resonance-enhanced low order harmonics.

WH5 16:45 Contributed Coherent intense soft x-ray high-order harmonics up to the water window generated by a loosely focused infrared laser Yuxi. Fu, K. Nishimura, K. Midorikawa, E.J. Takahashi, RIKEN, Wako, Saitama, JAPAN|A. Suda, Tokyo University of Science, Noda-shi, Chiba, JAPAN| Employing a TW-class infrared femtosecond laser (1.56 μm) for energy-scaling of high-order harmonics under a loosely focusing geometry, we generate bright, coherent, ultrafast soft x-rays up to 285 eV in Ne and 400 eV in He, respectively.

WH6 17:00 Contributed 51

Terawatt diode-pumped laser for intense Terahertz generation Antoine. Courjaud, J. Brisset, P. Sevillano, Amplitude Systemes, Pessac, FRANCE| We report on the laser development of a ytterbium based diode-pumped Terawatt-class laser delivering 500mJ 500fs @50Hz. The laser architecture is based on the combination of broadband Yb:CaF2 regenerative amplifier and Yb:YAG multipass amplifiers.

WI Poster session II (ultrafast phenomena) Wednesday April 25, 2018, WI 17:15--18:30, Room 2 WI1 Direct probing of tunneling time by time-dependent wave packet M. Yuan, X. Bian, WIPM,CAS, Wuhan, HUBEI, CHINA| An approach is presented to directly probe the tunneling time, where the influence of Coulomb potential is avoided. A tunneling time of about 13 a.u. is obtained, which is almost not influenced by laser intensities. WI2 Optimizing Gas Pressure to Control Long Trajectory Phase Matching Produces Isolated Attosecond Pulses Y. Pan, Jilin University, Changchun, JILIN, CHINA| We investigated the high-order harmonic generation(HHG) and propagation of Neon atoms exposed to the mid-infrared laser pulse. At lower pressure, long trajectory satisfies phase matching conditions can produce isolated attosecond pulses(IAP). WI3 Interpulse interference of low energy photoelectron for atom irradiated by sinusoidally phase-modulated pulses D. Zhang, F. Guo, Y. Yang, Inst Atomic & Mol Physics, Jilin Univ, Changchun, JILin, CHINA| We theoretically investigated the photoelectron emission of hydrogen atom irradiated by sinusoidally phase-modulated pulses. Compared with the Fourier limit pulse, its photoelectron spectrum shows an extra interference structure. WI4 Multiexciton Relaxation in Quantum Dots Solids L. Pan, Jilin University, Changchun, JILIN, CHINA| Multiexciton relaxation were compared between monodispersed quantum dots (QDs) and quantum dot solids (QDSs) by transient absorption. Relaxation rate is suppressed in QDSs. Electron percolating among building QDs is consider to be the reason. WI5 Interference effect of harmonic generation from aligned molecules manipulated by laser field H. liang, Q. Wang, F. Liu, X. Fan, L. Shan, H. Xu, R. Ma, D. Ding, Ji Lin university, Changchun, JILin, CHINA| We investigated aligned CO2 molecules in the Gaussian and non-Gaussian femtosecond pulses, which brings different two-center interference effects. Changing of laser field is proved to be an effective method to control harmonic generation. WI6 The femtosecond pulse splitting in volume grating X. Wang, X. Yan, H. Jiang, Z. Jin, Y. Dai, G. Ma, Lab. of Ultrafast Photonics, Department of Physics, Shanghai University, Shanghai, CHINA| Based on coupled-wave equations, the diffracted induced femtosecond splitting and its physical origin in the volume grating are discussed. To get two pulses with different duration, we include the chirp in the incident femtosecond pulse. WI7 Dressed dynamics of optical dark pulse at group velocity horizon Z. Deng, K. Wen, X. Wang, University of South China, HengYang, HUNAN, CHINA| Optical event horizon provides a powerful tool to effectively manipulate the properties of dark soliton 53 with weak probe wave. By controlling the strength of probe wave we investigate the fundamental feature of dark soliton. WI8 Creation and storage of Picosecond Pulse train in Polariton BEC Y. Xue, G. Wang, Jilin University, Chángchunshì, JILIN, CHINA| We propose a scheme to generate and store the picosecond pulse in a non-resonant pumped polariton BEC with the help of the coherent pump. Both the high efficiency and the high fidelity above 95% are achieved. WI9 Research on superimposed of 2 parallel high gain photoconductive semiconductor switches triggered by laser C. Ma, S. wang, W. Shi, Applied Physics Dept, Xi’an Univ of Tech, Xi'AN, CHINA| The synchronization of the 2 parallel GaAs PCSSs is measured as 314.6 ps. In the output terminal, superimposed by the output voltages of 2 parallel GaAs PCSSs, the total output voltage reaches up 2.3 times. WI10 The stickiness effect of Hydrogen atom exposed to intense laser field evidenced by stable and unstable manifolds D. Wang, P. Wang, Capital Normal University, BeiJing, BEIJING, CHINA| We investigated the ionization stabilization and the stickiness effect of Hydrogen atom exposed to intense laser pulse. It is shown that the ionization of the one electron system is govern by the unstable periodic orbit(UPO). WI38 Comparison of spectral broadening methods in CEP stabilization Y. Gao, Y. Liu, K. Zhao, S. Fang, Z. Wei, Institute of physics,CAS, Beijing, BeiJIng, CHINA|P. Huang, Xi’an Institute of Optics and Precision Mechanics,CAS, Xi'an, CHINA|Y. Jiang, Xidian University, Xi'an, CHINA|S. Xu, J. Wang, Beijing Jiaotong University, Beijing, CHINA| We measured and stabilized the carrier-envelope phase with three different methods of supercontinuum generation by f-2f spectral interferometry, finding that fused silica thin plates perfomed better than sapphire plate and hollow-core fiber. WI39 The application of double side Feynman diagram in strong-pump strong-probe spectroscopy Z. Wang, Y. He, Q. Wang, Y. Zhang, B. Hu, Z. Liu, Lanzhou University, Lanzhou, GANSU, CHINA| Based on double side Feynman diagram, an intuitive method is developed to explain sample's time evolution in strong laser fields, which is used to study the dynamic evolution of the V-type three-level system. WI40 Pure Even Harmonic Generation from Oriented N2 in Two-color Field Y. Yang, National University of Defense Technology, Changsha, CHINA| In order to make it sure if permanent dipole moment results in the generation of pure even harmonics, we investigate the HHG of nonpolar molecular N2 in two-color field using time-dependent Hartree-Fock theory. WI41 Terahertz emission of ZnO crystal driven by two-color laser L. Liu, NUDT, Changsha, HuNan, CHINA| Terahertz (THz) emission of crystal ZnO in a strong laser field and its second harmonics are simulated by 54 solving the semiconductor Bloch equations (SBEs), which describes the coupled interband and intraband dynamics in two-band model. WI46 CEO stabilized frequency comb from 1 um kerr lens modelocking laser using feed-forward scheme Ziyue Zhang, Hainian Han, Xiaodong Shao, Zhiyi Wei,Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China/C.Huibo Wang, School of Physics and Optoelectronics Engineering, Xidian University, Xian 710071, China We have stabilized CEO frequency of a kerr lens mode locking Yb:CYA laser through feed forward methods. 38 dB signal to noise ratio (SNR) of out-of-loop carrier envelop offset (CEO) beat signal was obtained. Integrated phase noise was measured to be 80mrad when integrating from 1Hz to 1MHz. The standard deviation of out-of-loop CEO frequency was maintained to be 12.2 mhz for more than 2 hours, and Allan deviation was calculated to be 2.87×10-17.

WI Poster session II (THz waves) Tuesday, April 25, 2018, WI 17:15--18:30, Room 3 WI11 Terahertz artificial surface phonon polaritons X. Zhang, Nanjing University, Nanjing, JIangSu, CHINA| Surface phonon polaritons have advantages in terms of confinement and losses in the terahertz regime. However, the working wavelengths of surface phonon polaritons are limited by materials. Here we address this issue via piezoelectric metamaterials. WI12 Towards Ultra-strong Terahertz Field Enhancement in Nanogap Split Ring Resonators J. Cao, K. Chen, X. Wu, School of Electronic and Information Engineering, Beihang University, Beijing, CHINA|B. Quan, B. Wang, L. Wang, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, CHINA|B. Wang, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, CHINA| We design and fabricate terahertz split ring resonators with nanogaps for extremely high field enhancement factor of >100000 when the splitting gap is sub-10 nm, and the experimental results agree very with the simulated results. WI13 Terahertz radiation from layered crystal and thin-film tungsten disulfide surface pumped by a femtosecond laser L. Zhang, Y. Huang, Q. Zhao, L. Zhu, Z. Yao, X. Xu, Northwest University, Xi'an, Shaanxi, CHINA| Terahertz radiation from layered tungsten disulfide crystal and thin-film on substrates are investigated experimentally. The results indicated different effect such as optical rectification and field effect. WI14 Magnon Phonon Coupling Studies of Bi1-xNdxFeO3 Nanoparticles by Terahertz Time Domain Spectroscopy Y. Zhang, X. Zhong, Xiangtan university, XiangTan, Hunan, CHINA|Q. Guo, Z. Lu, D. Zhang, J. Yuan, National University of Defense Technology, Changsha, CHINA| Magnon-phonon coupling of Bi1-xNdxFeO3 (x=0~0.2) nanoparticles are studied by Terahertz time domain spectroscopy. These nanoparticles show dopant concentration dependent electromagnons coupling response with the maximum coupling at x=0.12. WI15 Verification of the transparency of polystyrene multi-layer insulation using terahertz time domain spectroscopy B. Fan, Q. Shi, S. Shi, Sub-Millimeter Lab., Purple Mountain Observatory, Nanjing, Jiangsu, CHINA|B. Fan, Q. Shi, School of Astronomy and Space Science, University of Sciences and Technology of China, Hefei, Anhui, CHINA| We measured the transmission characteristics of XPS-type RT-MLI and EPS-type RT-MLI with different configuration. Comparing with the result on blocks, we confirm the reflectivity of XPS is lower than EPS between 1 to 4 THz. WI16 Terahertz spectroscopic identification of biomarker in renal fibrosis J. Luo, Y. Peng, T. Kou, C. Shi, Y. Zhu, University of Shanghai for Science and Technology, Shanghai, CHINA| L-hydroxyproline, an important biomarker in renal fibrosis, has been detected effectively in real rat kidney tissue by THz time-domain spectroscopy (THz-TDS), which is especially meaningful for the 56 diagnoses of renal fibrosis. WI17 Terahertz biosensing metasurface for DNA detection based on spoof surface plasmon polaritons Z. Dang, Y. Chen, Y. Lin, Y. Wang, School of Physical, University of Electronic Science and Technology of China, Chengdu, SiChuan, CHINA|D. Cheng, B. Zhang, G. Liu, Y. Luo, J. Wang, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, CHINA|G. Shu, College of Electronic Science and Technology, Shenzhen University, Shenzhen, CHINA| THz metasurface for DNA detection WI18 LT-GaAs photoconductive antenna excited at 1550 nm for near-field terahertz detection Yi Pan1, 2, Li Ding2, Jianbin He2, Zhu Zheng2, Qing Ding2, Yong Yao1, 1. Shenzhen institute of terahertz technology and innovation, Shenzhen, China. 2. Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, China. THz near-field imaging is an emerging technology for fundamental research and life science. We presented a new near-field detection technique using LT-GaAs photoconductive antenna at 1550nm. The system achieves 70dB dynamic range and 4THz bandwidth. WI19 Ultraviolet light-induced terahertz modulation based on indium oxide thin film H. Ji, B. Zhang, W. Wang, J.L. Shen, Capital Normal University, Beijing, CHINA| An active ultraviolet light-induced terahertz modulation based on indium oxide thin film was investigated in which exhibit a large absorption modulation of ~50% when illuminated by a low intensity UV laser (11 mW/cm2). WI20 Combined experimental and theoretical terahertz spectroscopic study of cocrystallization between piracetam and 2,5-dihydroxybenzoic acid H. Lu, Q. Wang, Y. DU, China Jiliang University, Hangzhou, ZheJiang, CHINA| Cocrystallization within piracetam and 2,5-dihydroxybenzoic acid was investigated by terahertz spectroscopy and solid-state density functional theory(DFT). WI21 Study on transmission loss of coplanar strip line R. Wu, B. Su, J. Wang, J. He, S. Zhang, C. Zhang, Capital Normal University, Beijing, BeiJIng, CHINA| In this paper, we studied the transmission loss of coplanar strip line with different parameters in THz frequency through the software of HFSS. And the optimal structure of the coplanar strip line was obtained. WI22 Terahertz Metamaterials with low losses and high refractive index X. Gao, School of Information and Telecommunication, Guilin University of Electronic Technology, Guilin, Guangxi, CHINA|F.L. Yu, School of Information and Telecommunication, Guilin University of Electronic Technology, Guilin, Guangxi, CHINA| A Terahertz (THz) metamaterial that is formed by two-layer metasurface separated by a dielectric plate is proposed to realize high refractive index and low loss in the frequency range from 0.2 to 2 THz. WI23 Study on transmission characteristics of terahertz wave in microstrip line Y. Zhao, B. Su, Y. Wen, J. He, C. Zhang, Capital Normal University, Bejing, CHINA| A design of microstrip line (MSL) has been used for propagating terahertz wave through an on-chip system. The ultimate aim of this article is to obtain the best parameters for the transmission of the THz 57 wave in the MSL using HFSS simulation software WI24 Study on the Early Detection of Alzheimer's Disease Using Terahertz Spectroscopy Y. Chen, Y. Wang, Z. Dang, Y. Lin, D. Cheng, B. Zhang, G. Liu, J. Wang, Y. Luo, University of Electronic Science and Technology of China, Chengdu, SiChuan, CHINA|G. Shu, Shenzhen University, Shenzhen, CHINA|X. He, X. Huang, Sichuan 81 Rehabilitation center Department of Integrated Tcm & Western Medicine, Chengdu, CHINA| We investigate the utility of terahertz (THz) spectroscopy in the field of detecting AD disease. The result of simulation shows that THz has good resolution ability even in the early stage of AD. WI25 A Wide-Angle and Polarization-Insensitive Perfect Terahertz Wave Absorber W. He, X. Huang, F. Yang, J. Ran, S. Xie, B. Gao, Chongqing University, Chongqing, CHONGQING, CHINA| A wide angle and polarization-insensitive metamaterial perfect absorber(MPAs) is proposed at terahertz regime. The absorptivity of the MPAs keep more than 90% under all polarization angles and oblique incidence. WI26 Study of terahertz transmission on coplanar waveguide Y. Wen, B. Su, Y. Zhao, J. He, C. Zhang, Captial Normal University, Beijing, CHINA| The coplanar waveguide has relatively low radiation loss in the millimeter wave band. In this paper, we find the most suitable coplanar waveguide structure parameters for the transmission of terahertz (THz) using the software of Ansoft HFSS. WI27 Detection and identification of liquids using reflection THz time-domain spectroscopy with principal component analysis and support vector machine algorithm X. Tan, S. Tang, Z. Yang, J. Xie, J. Tang, F. Xie, C. Qi, Terahertz Security Division, China Communication Technology Co. Ltd., Shenzhen City, Guangdong, CHINA| 46 different kinds of liquids inside a quartz glass cell were measured with reflection THz-TDS. The sample signals were analyzed with PCA and SVM algorithm in frequency domain and the liquids could be identified feasibly. WI28 Ultrafast all-optical tuning of terahertz waves in plasmonic metasurfaces H. cai, University of Science and Technology of China, Hefei, Anhui, CHINA|Q. Huang, Y. Lu, University of Science and Technology of China, Hefei, Anhui, CHINA| We experimentally and theoretically demonstrate an ultrafast plasmonic metasurface consisting of ion-implanted and annealed silicon disks in the terahertz range. The absolute transmission modulation is 38%, and the recovery time is about 200 ps. WI29 Transmission modulation of lattice mode in U-shaped metamaterials S. Yin, F. Hu, Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin, Guangxi, CHINA| We demonstrate that the lattice mode can suppress the excitation of the high order mode of localized surface plasmons in U-shaped metamaterials, which manifests the transmission modulation of lattice mode in U-shaped metamaterials. WI30 Toroidal dipole resonances based on four U-shape rings metamaterials in the terahertz regime S. Wang, X. Zhao, J. Zhu, S. Wang, G. Nashon, Q. Li, TUTE, Tianjin, TIANJIN , CHINA| 58 we proposed and fabricated a planar terahertz metamaterials composed of four U-shape rings resonators spacer with polyimide layers. Simulation and experimental results show that a toroidal dipolar resonance at 0.75THz is acquired . WI31 Characterization of the 70GHz photodiode via electro-optic sampling technique G.Z. Feng, National institute of metrology of chIna, Beijing, BEIJING, CHINA| We achieve the time-domain measurement of 70GHz photodiode basing on electro-optic sampling, and analyze the frequency-domain characterization of the prepared LiTaO3-based electro-optic modulators with coplanar waveguide structure. WI32 Investigation on Terahertz time-domain spectroscopy in mixed rare earth orthoferrite A. wu, Shanghai Institute of Ceramic,Chinese Academy of Sciences, Shanghai, CHINA| Terahertz time-domain spectroscopy (THz-TDS) was used to study the ferromagnetic mode and antiferromagnetic mode of mixed rare earth orthoferrites It demonstrates that THz-TDS is a sensitive mean to explore the spin reorientation transition. WI33 Investigation of graphene supported tunable PIT phenomenon in the THz regime X. He, C. Shi, H. Zhang, Shanghai Normal University, Shanghai, SHanghai, CHINA| The tunable THz plasmonic induced transparency has been explored based on the graphene-metal hybrid structure, indicating that the obvious Fano peak can be observed and efficiently modulated, and the amplitude modulation depth is about 40%. WI34 Toward Topologically Manipulation of Terahertz Photoresponse in Layered Materials J. Wang, C. Guo, L. Wang, X. Chen, W. Tang, W. Lu, National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, CHINA|C. Guo, L. Wang, X. Chen, W. Tang, W. Lu, University of Chinese Academy of Science, Beijing, CHINA|J. Wang, Shanghai Normal University, Shanghai, CHINA| The joint presence of narrow bandgap and a 2DEG arising from topological surface states enables the realization of excellent Ohmic contacts. We selected Bi2Se3 and TaSe2 to construct terahertz detectors with high sponsivity and short response time. WI35 Energy scaling of surface-emitted ring-cavity terahertz parametric oscillator with pump recycling technique L. Tang, D. Xu, Y. Wang, C. Yan, Y. He, C. Li, D. Yan, J. Shi, J. yao, Tianjin University, Tianjin, TIANJIN , CHINA| The energy scaling of THz wave based on SE ring-cavity TPO with pump recycling technique have been demonstrated. The tunable range was 1.38 to 3.42 THz. The maximum enhancement ratios of the terahertz wave output power were 10.3 times at 1.38 THz. WI36 High-energy and ultra-wideband tunable terahertz source with DAST crystal via difference frequency generation Y. He, Y. Wang, D. Xu, M. Nie, C. Yan, L. Tang, J. Shi, D. Yan, H. Liu, J. yao, Tianjin University, Tianjin, TianJin, CHINA|B. Teng, Qingdao University, Qingdao, CHINA| We have demonstrated a high-energy and broadly tunable terahertz (THz) source in DAST crystal. The THz energy was related to the damage of the crystal. Furthermore, tests of transmission spectroscopy of four typical samples were demonstrated. 59

WI37 Effects of micro/nano-structures on the photoelectric properties of silicon solar cell: A pump-probe study T. Chen, X. Wang, P. Han, Y. Zhang, Capital Normal University, Beijing, BeiJIng, CHINA|C. Zhang, University of Wollongong, Wollongong, AUSTRIA|J. Lee, Hanyang University, Ansan, KOREA (THE REPUBLIC OF)| We investigated the influence of the type of nanostructured surface and the doping impurity level on the frequency-dependent dielectric response and photoconductivity of c-Si PV solar cells by using femtosecond pump-THz probe spectroscopy techniques. WI42 Generation of Rydberg Electrons and Terahertz Wave in Few Cycle Laser Pulses J. Liu, L. Liu, W. Dong, Z. Zhao, J. Yuan, National Unversity of Defense Technology, Changsha, HuNan, CHINA| Two typical near-threshold processes in few cycle laser pulses, generation of Rydberg electrons and Terahertz wave generation, are investigated using the Classical Trajectory Monte Carlo simulations. WI43 Enhanced rotational absorption of polar molecule-formed plasma at THz frequency Y. Huang, Z. Zhang, Advanced Interdiscriplinary Technology Research Center, National Innovation Institute of Defense Technology, Beijing, CHINA|Y. Huang, Q. Guo, J. Zhao, J. Yuan, Z. Zhao, National University of Defense Technology, Changsha, CHINA|J. Yuan, Graduate School of China Academy of Engineering Physics, Beijing, CHINA| We observe the enhanced THz absorption of the rotational transition lines within the resonant absorption frequency range. Gas pressure is varied to show that the enhanced THz absorption lines are related to the plasma frequencies. WI44 440 GHz Turntable Imaging with a Regularization Method of Region-Based Feature Enhancement S. Luo, J. Gao, B. Deng, Y. Qin, H. Wang, College of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, CHINA| A region-based feature enhancement imaging algorithm was applied for terahertz radar imaging, reconstructing images with fewer speckles and a smoother surface than those obtained by traditional Fourier-transform-based algorithms. WI45 Frequency up-conversion of electromagnetic wave in a rapidly plasma for Terahertz wave C. Chang, K. Chen, Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, CHINA/ C. Chang, Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an, Shaanxi 710024, CHINA Electromagnetic pulse propagation through a rapidly created plasma and frequency up-conversion has been demonstrated by the particle-in-cell (PIC) and FDTD methods. The two methods could well simulate the process of this issue about the interaction between the time-varying plasma and the electromagnetic wave.

ThA Plenary session IV Thursday, April 26, 2018, 8:30--10:00 Huan Zhao, Capital Normal University, China, Presider Jianmin Yuan,National University of Defense Technology,China,Presider

ThA1 8:30 Plenary Recent Development on THz Aqueous Photonics Xicheng. Zhang, U of Rochester, The Institute of Optics, Rochester, New York, UNITED STATES| We demonstrated THz wave generation from liquid water in spite of its infamously strong absorption characteristics. It is reasonable to expect that liquids might have unique properties if they could be harnessed as THz sources. Presider: Huan Zhao, Capital Normal University, China

ThA2 9:15 Plenary Ultrafast Light Manipulation Using Photonic Micro/Nano-Structures Qihuang. Gong, Peking University, Beijing, BEIJING, CHINA| Micro/nano photonic structures permit remarkable control of the propagation of light. The micro/nanoscale ultrafast light manipulation paves the way for the realization of various nanoscale integrated photonic devices, which construct the essential basis of ultrahigh-speed and ultrawide-band information processing chips. Moreover, for practical chip-integration applications, several significant features, including on-chip trigger, ultrafast response, ultralow energy consumption, and wideband (or multiple-wavelength) operation, are stringently required. In this presentation, a selection of recent results will be presented. we realized an ultrafast, ultralow power, on-chip-triggered 2x2 all-optical switch with multiple operating wavelengths based on plasmon–photon hybrid nanostructures coated nonlinear multi-component nanocomposite material formed directly in integrated photonic circuits. Low threshold pump intensity of 450 kW/cm2, fast response of 63 ps, and multiple operating wavelengths were realized simultaneously. An ultralow-power all-optical logic data distributor with dual address bits is also realized, based on a large nonlinearity enhancement occurs in the nanocomposite material through resonant excitation via an upconversion radiative-transfer process, which ensures an ultralow operating threshold control intensity of 10 kW/cm2. An ultrafast response time of several picoseconds is simultaneously maintained based on structural defects inducing ultrafast decay of excited-state carriers. Based on tunable Fano resonance or PIT of metallic nanostructures, ultrafast modulations on light transmission were also demonstrated. Moreover, ultracompact plasmonic devices including SPP unidirectional generator, splitter and others were experimentally demonstrated. Presider: Zengxiu Zhao, National University of Defense Technology, China

ThB Terahertz spectroscopy and imaging II

Thursday, April 26, 2018, 10:20--12:00 Jian Chen, Nanjing University, Presider

ThB1 10:20 Keynote Commissioning and Operation of the First High Average Power Terahertz Free Electron Laser in China Z. Xu, Sichuan Defense Science and Technology Industry Office, Chengdu, CHINA|X. Shu, Institute of Applied Physics and Computational Mathematics, Beijing, CHINA|X. Lu, Institute of Heavy Ion Physics, Peking University, Beijing, CHINA|W. Huang, Department of Engineering Physics, Tsinghua University,, Beijing, CHINA|Ming. Li, X. Yang, D. Wu, Institute of Applied Electronics, Mian, SiChuan, CHINA| This paper presents the first THz free electron laser in China. The terahertz laser’s frequency is continuous adjustable from 2 THz to 3 THz. The macro-pulse average power is more than 10 W. Professor Li graduated from Tsinghua University, and subsequently worked in Institute of Applied Electronics till now, where he serves as the director of the free electron laser and THz department. His research focuses on free electron laser technology, accelerator physics and technology, radiography technology and applications, terahertz technology and other fields of scientific research. During his researching time, he has presided over a number of scientific research projects such as the National Major Scientific Instruments and Equipment Development Project, the 863 Program, and so on. Now under his leadership, the china’s first high power THz source, which is based on Free electron laser and can provide both high peak and average power radiation, has achieved remarkable success.

ThB2 10:50 Invited Probing Interface Potential of Semiconductor Heterostructures with Laser Terahertz Emission Spectroscopy Iwao. Kawayama, Osaka University, Osaka, JAPAN| I introduce recent studies on interface potentials of semiconductor heterostructures with laser terahertz emission spectroscopy that measures THz emissions from materials and devices excited by femtosecond laser pulses.

ThB3 11:10 Invited Imaging on the Nanoscale with Terahertz Time-Domain and Emission Microscopy Pemille. Klarskov Pedersen, A. Pizzuto, D.M. Mittleman, School of Engineering, Brown University, Providence, Rhode Island, UNITED STATES|P. Klarskov Pedersen, DTU Fotonik, Technical University of Denmark, Kgs. Lyngby, DENMARK| We combine Laser Terahertz Emission Microscopy (LTEM) with terahertz time-domain nanoscopy in a near-field microscopy configuration. With this, we demonstrate how the two techniques provide complementary information about the sample.

ThB4 11:30 Contributed The influence of Nb and Ti interface on DC characteristics of superconducting titanium transition edge sensors Yue. Geng, W. Zhang, Z. Wang, J. Zhong, W. Miao, Q. Yao, S. Shi, Purple Mountain Observatory, CAS, Nanjing, JIANGSU , CHINA|W. Zhang, Z. Wang, J. Zhong, W. Miao, Q. Yao, S. Shi, Key Lab of Radio Astronomy, CAS, Nanjing, CHINA|Y. Geng, University of Science and Technology of China, Hefei, CHINA| 62

TESs are attractive in quantum optics and quantum information experiments owing to high efficiency and photon number resolving capability. We present the DC characteristics of TESs with different overlapping area between Ti microbridge and Nb leads.

ThB5 11:45 Contributed Influence of Oxygen Adsorption on the Terahertz Conductivity Spectroscopy of CVD-Grown MoS2 Thin Flims Xing. Xiao, Z. Zhang, X. Lin, Y. Yu, Z. Jin, G. Ma, Department of Physics, Shanghai University, Shanghai, Shanghai, CHINA|X. xiao, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong, CHINA|L. Zhao, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, Shanghai, CHINA|J. yao, College of Precision Instrument and Optoelectronics Engineering,Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin University, Tianjin, Tianjin, CHINA| By employing the time-resolved terahertz spectroscopy, we have investigated the dynamical photoconductivity response of MoS2 laminate in nitrogen, dry air and oxygen, the photoconductivity of MoS2 is dramatically altered by the adsorption of oxygen.

ThC Terahertz science and technology in micro and nano-structures IV Thursday, April 26, 2018, 10:20--12:00 Hou-Tong Chen, Los Alamos National Laboratory, USA, Presider ThC1 10:20 Keynote Terahertz Driven Accelerators Franz. Kaertner, Physics Department, Universität Hamburg, Hamburg, GERMANY|F.X. Kaertner, Center for Free-Electron Laser Science, DESY, Hamburg, GERMANY| High-energy THz pulse generation and approaches towards linear THz accelerators are discussed and demonstrated. First results from THz guns and accelerators are shown and concepts for compact X-ray sources based on these devices are presented. Franz Kärtner heads the Ultrafast Optics and X-rays Group at the Center for Free-Electron Laser Science at DESY and is Professor of Physics at University of Hamburg. Within an ERC Synergy Grant, he and colleagues pursue Terahertz acceleration and coherent X-ray sources. He is a fellow of OSA and IEEE. ThC2 10:50 Invited Terahertz super-focusing based on chiralty plasmonics Yiming. Zhu, Shanghai Inst. of Science and Technology, Shanghai, CHINA| A planar chirality spiral plsmonic lens that owns the capability of realizing polarization-controlled terahertz super-focusing, is proposed. The full wave at half maximum (FWHM) of the hot-spot is almost 0.38λ, breaking the diffraction limit. ThC3 11:10 Invited Manipulating terahertz wavefront using all-silicon dielectric metasurfaces H. Zhang, Q. Xu, Xueqian. Zhang, J. Han, W. Zhang, Tianjin University, Tianjin, CHINA| In this talk, we will present our recent studies on efficient terahertz wavefront control using all-silicon dielectric metasurfaces, including polarization-independent and -dependent anomalous refraction, focusing, and special beam generation, etc. ThC4 11:30 Contributed Demonstration of Orbital Angular Momentum Multiplexing and Demultiplexing Based on Metasurface in Terahertz Band Huan. Zhao, X. Wang, Y. Zhang, Capital Normal University, Beijing, CHINA|B. Quan, C. Gu, J. Li, Chinese Academy of Sciences, Beijing, CHINA| In this work, OAM (de)multiplexing based on a single layer metasurface has been demonstrated numerically and experimentally. The designed structure realized OAM multiplexing or demultiplexing under the incident Gaussian beam or vortex beam. ThC5 11:45 Contributed Polarization-Dependent Terahertz Metasurfaces Shiwei. Qu, H. Yi, Univ of Electronic Science & Tech China, Chengdu, SICHUAN, CHINA|C.H. Chan, Electronic Engineering, City University of Hong Kong, Hong Kong, CHINA| In this paper, two kinds of polarization-dependent metasurfaces are proposed for wavefront manipulation. The results of the proposed polarization-dependent metasurfaces are illustrated in detail while their operating principles are also given.

ThD Terahertz spectroscopy and imaging III

Thursday, April 26, 2018, 10:20--12:00 Cunlin Zhang, Capital Normal University, Beijing, CHINA, Presider

ThD1 10:20 Keynote Optical frequency combs for precision spectroscopy from near-infrared to Terahertz Heping. Zeng, East China Normal University, Shanghai, SHANGHAI, CHINA| Optical frequency combs have revolutionized the approach to laser spectroscopy and thus had profound impact on molecular sensing and imaging. Here, several methods for optical comb generation from the near-infrared to Terahertz regions are reviewed. Their applications in molecular fingerprinting with asynchronized laser combs (also dual-comb spectroscopy) are discussed. Heping Zeng received the B.S. degree in physics from Peking University, Beijing, China, in 1990 and the Ph.D. degree from the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai, China, in 1995. Currently, he is a Professor in East China Normal University, China. His research interests include ultrafast photonics, Terahertz optics, optical frequency combs and single-photon optics. So far, he has published more than 250 papers in peer-reviewed journals including Phys. Rev. Lett., Appl. Phys. Lett., Opt. Lett. Phys., Rev. A, Opt. Express and so on. In 2006, Prof. Zeng has been elected Fellow of OSA, the Optical Society, “for significant contributions to the understanding of ultrafast molecular processes in intense laser fields, and for sustained technical development of high-power ultrashort fiber lasers and infrared single-photon detection.”

ThD2 10:50 Invited Terahertz micro-nano structure devices for phase and polarization control Shengjiang. Chang, Nankai University, Tianjin, TianJin, CHINA| Terahertz (THz) application systems have an urgent demand on efficient THz phase and polarization devices. This report will introduce broadband polarization convertors and tunable phase shifters based on well-designed THz metasurfaces and tunable materials.

ThD3 11:10 Invited Development of THz Emitters and Detectors for Femtosecond-Fiber-Laser-Based Terahertz Time-Domain Spectroscopy Masahiko Tani, University of Fukui, Fukui, FUKUI, JAPAN| For realization of low-cost THz time-domain spectroscopy system, the use of femtosecond fiber lasers are highly preferable. This paper reports development of THz emitters and detectors usable with 1550-nm femtosecond fiber lasers.

ThD4 11:30 Contributed Visualizing Interference Structure with Attosecond Temporal Resolution Weifeng Yang, Shantou University, Shantou, GUANGDONG, CHINA| We developed a GQTMC method which could apply to arbitrary values of the Keldysh parameter. It provides an efficient way to probe the interference structures and the underlying electronic dynamics in photoelectron momentum distribution.

ThD5 11:45 Contributed CEP-stabilized, sub-18 fs, dual output at 10 kHz and TW-class 1 kHz Ti: Sa laser with an original front-end design Xiaowei. Chen, A. Golinelli, B. Bussière, E. Gontier, Lisses operations, Amplitude laser group, Evry, FRANCE|A. Golinelli, O. Tcherbakoff, P. d'Oliveira, LIDYL, CEA-SACLAY, Gif-sur-Yvette, FRANCE|P. Paul, San Jose operations, Amplitude laser group, San Jose, California, UNITED STATES| We present a Ti: Sa based 1 kHz TW-class laser system with an original 10 kHz front-end design, delivering 17.8 fs pulses at with 350 mrad shot to shot residual CEP noise.

Author Index

A Cheng,Zhenxiang•TuH3 Ang,L. •WC3 Chu,Junhao•TuH1 Ang,Y. •WC3 Chu,W. •WD1 B Chu,Weidong•WF2 Baghery,Mehrdad•TuJ3 Courjaud,Antoine•WH6 Bai,Ya •TuK42 Cui,Hong-Liang•TuK40 Balakin,Alexei V. •WG1 Cui,Sen•TuE5 Becker,Wilhelm•TuJ4 Cui,Suochao•TuK8 Bian,XueBin•WI1,WD4 Cui,T. •TuA2 Brisset,Jean-Gabriel•WH6 Cutler,P. H. •WC5 Bussière, B. •ThD5 D C Dai,Jiayu •WH3 Cai,Honglei•WI28 Dai,Ye•WI6 Cai,Qiang •TuK44 Dang,Zhangqi •TuK28,WI17,WI24 Cai,Yi•TuB2 Danylo,Rostyslav•WH4 Cao,J. •WF1 Deng,Bin•WI44,TuK16,WB4 Cao,J. C. •TuK38,TuK38,TuK15,TuK29 Deng,Derong•ThB1 Cao,Jiahui•WI12 Deng,Qing hua •TuK21 Cao,Shixun•TuH3 Deng,Zhixiang •WI7 Cao,Wei•WD5 Ding,Dajun•WD2,WI5,WI2 Chai,Shusu•TuB3 Ding,Li•WI18 Chan,Chi Hou•ThC5 Ding,Qing•WI18 Chang,C•WI45 d'Oliveira, Pascal•ThD5 Chang,Shengjiang •ThD2 Dong,Chengang•TuK5,TuK45 Chang,Tianying•TuK40 Dong,Jiangpeng•TuC3 Chen,H. •WG2 Dong,Wenpu•TuK1,TuK7 Chen,J. •WD1 Du,Tao-Yuan•WD4 Chen,Jing•TuJ4 Du,Yong•WI20,TuK44 Chen,Jiong•TuK8 Duan,Danni•TuK5 Chen,K•WI45 Dzhidzhoev,Murat S. •WG1 Chen,Kanglong•TuK36,WI12 E Chen,Liming•TuE5 E,Y.W. •ThA1 Chen,Min•TuE5 F Chen,Qijun•WG6 Fan,B.W. •WI15 Chen,T•WI37 Fan,Fei•ThD2 Chen,Tunan•TuF5 Fan,Xiaohu•TuK4 Chen,Xin•WI34,ThD5,TuK11 Fan,Xin•WI5 Chen,Xiren•TuH1 Fan,Zhengquan•WH4 Chen,Yanping•TuE5 Fang,S•WI38 Chen,Yuqi•TuK28,WI17,WI24 Fang,Shaobo•TuG4 Cheng,Dong•TuK28,WI17,WI24,WB3 Fang,Zhaoji•TuK39,WF6 Cheng,Y. •WD1 Feng,Hua•TuF5 67

Feng,Shengfei•TuK20 He,Wei•WI25 Feng,Zhigang•WI31 He,Xia•WI24 Fu,Yuxi•WH5 He,Xiaoyong•WI33 G He,Xinkui• TuG4 Gan,Zebiao•WA2 He,Y•WI35,WI36,WI39 Gao,Bin•WI25 Hebling,János•TuI1 Gao,Jia•WI44,TuK40 Hegmann,F.A. •WA1 Gao,Jingkun•WB4 Hergott,J.F. •ThD5 Gao,Xi•WI22 Hirakawa,K. •TuC1 Gao,Yitan •TuG4 Hirakawa,Kazuhiko•WC2 Gao,Z•WI38 Holzwarth,Ronald•WB5 Geng,Y. •ThB4 Hou,Lei•TuK35 Georges,Patrick •TuK3 Hou,Xun• TuG4 Giri,Sajal Kumar•TuJ3 Hou,Yanbing•TuK49 Gleichweit,Christoph•WB5 Houard,Aurélien•WH4 Golinelli,A. •ThD5 Hu,B•WI39 Gong,Q. •ThA2 Hu,Fangrong•WI29 Gong,Qihuang•WH4 Hu,Guoqing•WC1 Gontier,E. •ThD5 Hu,L. X. •TuG3 González,A. I. •TuK3 Huang,Hangdong• TuG4 Gordienko, VyacheslavM. •WG1 Huang,P•WI38 Gu,Changzhi•ThC4,ThD3 Huang,Pei•TuG4 Gu,Jianqiang•TuI4,TuK26,WF5 Huang,Qiuping•WI28 Guichard,F. •TuK3 Huang,Wenhui•ThB1 Guo,C•WI34 Huang,Xialian•WI24 Guo,Chucai•TuK31 Huang,Xiaoyi•TuK44 Guo,Fu-Ming•WI2, WI3 Huang,Xin•WI25 Guo,Quan•WI43,TuK14,TuK22,WI14 Huang,Yindong•TuK7,TuK14,TuK22 H Huang,Yuan•TuK39 Han,Hainian• WI46 Huang,Yuanyuan•WI13,WF4 Han,Jiaguang•ThC3,TuI4,TuK26,WF5 Huang,Z•WI43 Han,Peng•WI37,TuK20 I Hang,Yin•WA2 Ivanov,Igor E. •WG1 Hanna,M. •TuK3 J Hao,Qiang•TuK6 Jang,Dogeun•TuE2 Hao,XiaoLei•TuJ4 Ji,Hongyu•TuK33,TuK34,TuK49,WI19 He,Chuan•WF4 Ji,Jie•TuK37,WG6 He,Feng•TuE5 Jia,Guang-Rui•WD4 He,Huijun•TuG1 Jia,M. W. •WC4 He,Jianbing•WI18 Jiang,Hongbing•WH4 He,Jingsuo•WI21,TuK23,TuK32,TuK41,WI23,WI2 Jiang,Hongru•WI6 6 Jiang,Huachao•TuH4 He,L. •WH1 Jiang,Tao•TuK21 He,Lixin•TuK2 Jiang,Y•WI38 He,Tianhui•ThB1 Jiang,Y.H. •WG4 68

Jiang,Yujiao•TuG4 Li,Quan•TuK43,WI30 Jie,Wanqi•TuC3 Li,Shangqin•TuB3 Jin,Biao-Bing•TuF3 Li,WeiDong•TuJ4 Jin,Minxing•WD2 Li,Weihua•TuK21 Jin,Q. •ThA1 Li,Wenqi•WA2 Jin,Zuanming•ThB5,TuK18,TuH3,TuK9,TuK11,WG Li,Y.T. •TuE4 5,WI6 Li,Yanfeng•TuI4,TuK26,WF5 Jing,Chao•TuH3 Li,Yang•WD5 K Li,Yuanyuan•WF2 Kang,Dongdong•WH3 Li,Yutong•TuB3,TuE1 Kärtner,Franz X.•ThC1 Li,Z. P. •TuK29 Kawase,Kodo•TuH2 Li,Zheng•TuK39 Kawayama,Iwao•TuF2,ThB2 Liang,Dachuan•TuK26 Kim,K. •WE2 Liang,Hongjing•WI5 Kim,Ki-Yong•TuE2 Liang,Qingqing•WH4 Klarskov,Pernille •ThB3 Liang,Xiaoyan•WA2 Kong,Deyin•TuB3,TuK36,TuK24,WF6 Liao,Guoqian•TuE1 Kotelnikov,Igor A. •WG1 Lin,Baoqing•TuK13 Kou,Tianyi•WI16 Lin,Ke•TuK46 Ku,Zhiliang•TuK18 Lin,Qinggang•TuB2 Kuzechkin,Nikolay A. •WG1 Lin,Sifen•ThB1 L Lin,Xian•ThB5,TuH3,TuK9,WG5,TuK11,TuK18 Lai,XuanYang•TuJ4 Lin,Yuxing•WI17,TuK28,WI24 Lan,Feng•TuK25,TuK30 Lin,Zhiyang•TuK13 Lan,P. •WH1 Lindenberg,A.M. •WE1 Lan,Pengfei•TuK2 Ling,Furi•TuK37,WG6 Lao,Chenglong•ThB1 Liu, Lu•TuK7 Lavenu,L. •TuK3 Liu,Chengpu•TuK42 Lei,Mingwei•WH4 Liu,Dandan•TuK33,TuK49 Leng,Yuxin•WA2 Liu,Fangyuan•WI5 Lerner,P. B. •WC5 Liu,Guo•TuK28,WI17,WI24 Li ,Hua•WF3 Liu,H•WI36 Li ,Ruxin•WA2 Liu,Hongwei•TuK46 Li,C•WI35 Liu,Jiansheng•TuG2 Li,H. •TuK15,TuK29,TuK47 Liu,Jian-xun•TuK10 Li,H. Z. •TuG3 Liu,Jie•ThB1 Li,Hai•TuK6 Liu,Jinlei•TuK1,TuK7,WI42 Li,Heting•TuK20 Liu,Jinsong•TuK27 Li,Jiang•TuF4 Liu,Ken•TuK31 Li,Jugeng•TuK11 Liu,L•WI41 Li,Junjie•ThC4,ThD3 Liu,Lingyu•TuK40 Li,M. •TuG5 Liu,Lu•TuK1,WI42 Li,Min•WD5 Liu,Peng•TuK42 Li,Ming•ThB1,TuK17 Liu,Qi•WB4,TuK9 Li,Peng•ThB1,TuK17 Liu,Qiao•TuF4 69

Liu,XiaoJun•TuJ4 Meng,Chao•TuK14 Liu,Xin•TuK34 Meng,Congsen •TuK1,TuK14 Liu,Xiumei•TuH3 Meng,Xianghao•TuG1 Liu,Y•WI38 Miao,Jingyuan•WI31 Liu,Y. P. •WC4 Miao,Jungang•TuB3 Liu,Yangyang•TuG4 Miao,W. •ThB4 Liu,Yanqi•WA2 Midorikawa,Katsumi•WH5 Liu,Yi•WH4 Misawa,Hiroaki•TuD3 Liu,Yunquan•TuJ1 Miskovsky,N. M. •WC5 Liu,Z•WI39,WD1 Mittleman,Daniel M. •ThB3 Lohninger,H. •WB5 Mottay,Eric •TuK3 Lu,Hao•WI20 Murakami,Hironaru•TuF2 Lu,P. •WH1 Murate,Kosuke•TuH2 Lu,Peixiang•TuK2,WD5 Mysyrowicz,André•WH4 Lu,W•WI34 N Lu,Wei•TuH1 Naka, Akiyoshi•WC2 Lu,Xiangyang•ThB1 Nashon,Gati•WI30 Lu,Y. •TuG3 Natile,M. •TuK3 Lu,Yalin•WI28 Neely,David•TuE1 Lu,Zhihui•WI14 Ng,A. •TuD2 Luo,Feng•TuK25 Nie,M•WI36 Luo,Jie•WI16 Nie,Tianxiao•TuK24 Luo,S•WI44 Ning,Qicheng•TuJ3 Luo,Siqiang•WD5 Nishimura,Kotaro•WH5 Luo,Xing•ThB1 O Luo,Yong•WI24,TuK28,WI17 Okada,Kosuke•TuF2 Lv,Hang•WD2 Ouyang,Chunmei•TuI4,TuK26 Lv,Li-ping•TuK9 Ozaki,T. •TuB1 Lv,Longfeng •WI19 P Lv,Zhihui•TuK1,TuK14,TuK22 Pan,C. •WB2 M Pan,Lingyun•WI4 Ma,Cheng•WI9 Pan,Yi•WI18 Ma,Guohong•ThB5,TuH3,TuK9,TuK11,TuK18,WG Pan,Yun•WI2 5,WI6 Paul,P.M. •ThD5 Ma,Jinglong•TuB3 Peng,Yan•WI16 Ma,Qian•WH3 Peters,Ole•WB5 Ma,Ri•WI5 Pickwell-MacPherson, Emma•TuF1 Ma,S. J. •WC4 Pizzuto,Angela•ThB3 Ma,Yan-yun•TuK10 Q Ma,Z. •WC3 Qi,Chunchao•WI27 Matsuda,Aleph•WC2 Qi,J.•WC4 Matsuda,Eiki•TuF2 Qin,Hua•TuC2 Mazumder,Pinaki•TuK30,TuK25 Qin,Y•WI44 McKenna,Paul•TuE1 Qin,Yuliang•TuK16 Medvedev,Nikita•WF6 Qu,Shi-Wei•ThC5 70

Quan,Baogang•TuK36,ThC4,ThD3,WI12 Sun,Quan•TuD3 Quan,Wei•TuJ4 Sun,Wenfeng•TuK20 Ran,Jia•WI25 Sun,Xiaowei•TuK19 Rost,Jan-Michael •TuJ3 T Ruan,Cunjun•TuB3,TuK36,TuK24,WF6,TuK23,TuK Takahashi,Eiji J. •WH2,WH5 32,TuK41,WI21,WI23,WI26 Tamai,Naoto•WI4 Ruchon,T.•TuK3 Tan,Xinhui•WI27 S Tang,Jianmin•WI27 Saalmann,Ulf •TuJ3 Tang,K•WI35 Schneider,H. •TuA1 Tang,L•WI36 Serita,Kazunori•TuF2 Tang,Shana•WI27 Sevillano,Pierre•WH6 Tang,W•WI34 Shan,Lijun•ThB1 Tang,Z. K. •TuK47 Shan,Liyu•WI5 Tcherbakoff,O.•ThD5 Shao,F. Q. •TuG3 Tcypkin, A. •ThA1 Shao,Jun•TuH1 Teichert,Christian•TuC3 Shao,Xiaodong• WI46 Teng,B•WI36 Shen,Changle•TuK21 Teng,Hao•TuG4 Shen,Jingling•TuK33,TuK34,TuK49,WI19 Teng,Jinghua•TuI2 Shen,Xuming•ThB1 Tian,Wenlong•TuG1 Sheng,Z.M. •TuE4 Tian,Ye •TuG2 Sheng,Zhengming •TuE1,TuE5 Tian,Yue•TuK37 Shi,Chengjun•WI16 Tian,Zhen•TuK26,WF5,TuI4 Shi,Chenyuyi•WI33 Tikhonchuk,Vladimir•WH4 Shi,Huafeng•TuK19 Tonouch,Masayoshi•TuF2 Shi,J•WI35,WI36 Tu,Yanyun•TuK12,TuK14 Shi,jinxin•TuK48 U Shi,Q.•WI15 Ueno,Kosei•TuD3 Shi,S.•WB1 Unuma,Takeya•WC2 Shi,S.C.•ThB4,WI15 W Shi,Wei•TuK5,TuK45,TuK35,WI9 Wan,W. J. •TuK15,TuK29 Shi,Zexia•TuK41 Wang•WI39 Shi,Zongjun•TuK48 Wang, Ji•TuG4 Shkurinov,Alexander•WG1 Wang,Baoning•TuK2 Shu,GuoXiang•WI24,TuK28,WI17 Wang,Bo•TuK24,TuK39,WF6,WI12,WI19 Shu,Xiaojian•ThB1 Wang,Cheng•WA2 Singh,R. •TuI3 Wang,Ding•WI10 Solyankin,Peter M. •WG1 Wang,F. •TuK38 Song,Pan•TuK1 Wang,Gang•WI8 Su,Bo•WI21,TuK23,TuK32,TuK41,WI23,WI26 Wang,Guocui•TuK49,WI19 Su,Fuhai•TuH4 Wang,H•WI44 Suda,Akira•WH5 Wang,Hai•TuK41 Sun,Feng•TuK8 Wang,Hanbin•ThB1 Sun,Jiandong•TuC2 Wang,Honggeng•TuK42 Sun,Qiushuo•TuF1 Wang,Hongqiang•TuK16,WB4 71

Wang,Huibo• WI46 Wu,J. •TuJ2 Wang,J•WI34,WI38 Wu,R. Q. •WC4 Wang,Ji• TuG4 Wu,Rui•WI21 Wang,Jiahui•WI21 Wu,Weidong•TuK21 Wang,JianGuo•TuJ4 Wu,Xiaojun•TuB3,TuK24,TuK36,TuK39,WF6,WI12 Wang,Jianxin•ThB1 Wu,Xiaolei•TuK32 Wang,Jianxun•WI17,WI24 Wu,Y. Z. •WC4 Wang,Jiarui•TuF1 Wu,Yaxiong•TuK32 Wang,Kejia•TuK27 Wu,Yong•TuJ4 Wang,L•WI34 X Wang,Li•TuK24,TuK39,WF6,WI4,WI12 Xia,Chenyi•TuK39WF6 Wang,Ling•TuK45 Xiang,Feidi•TuK27 Wang,Peijie•WI10 Xiao,Bao•TuC3 Wang,Q•WI39 Xiao,Dexin•TuK17,ThB1 Wang,Qiaoxia•WI5 Xiao,Meng•TuK36 Wang,Qiqi•WI20 Xie,Fangqi•WI27 Wang,Sen•TuK20 Xie,Hui•WD5 Wang,Shaoqiang•WI9,TuK5,TuK45,TuK32,WI21 Xie,Junzhong•WI27 Wang,Shuang•TuK43,WI30 Xie,Shengyi•WI25 Wang,Song•WI30 Xing,Xiao•ThB5 Wang,W.M. •TuE4 Xiong,Luyao•TuK34 Wang,Wei•TuK34,TuK49,WI19,TuK33 Xiong,Zikang•TuK23 Wang,X•WI37 Xu ,Yong•ThB1 Wang,Xiaowei•TuK1,TuK4,TuK14 Xu,B. •WD1 Wang,Xiaoyan•WI6 Xu,D•WI35,WI36 Wang,Xinke•TuK20,ThC4,ThD3,WI7 Xu,Degang•TuF5 Wang,Xuemin•TuK21 Xu,Haifeng•WD2,WI5 Wang,Y•WI35,WI36 Xu,Quan•ThC3,TuI4 Wang,YanLan•TuJ4 Xu,S•WI38 Wang,Yao•TuK28,WI17,WI24 Xu,Shixiang•TuB2 Wang,Yuye•TuF5 Xu,Shujuan•TuH4 Wang,Z. •ThB4,WC4 Xu,Siyun•TuG4 Wang,Zhanshan •TuK42 Xu,Tie•TuK43 Wang,Zhaohua•TuG1 Xu,Wei•TuK31 Wang, Zhenwei•TuK12 Xu,Xinlong•WF4,WI13 Wei,Minggui•WF5 Xu,Yadong•TuC3 Wei,Z•WI38 Xu,Yong•TuK17 Wei,Zhiyi•TuG1,TuG4, WI46 Xu,Yuehong•TuI4 Wen,Kui•WI7 Xu,Zhizhan•WA2 Wen,Yiwei•WI23,WI26 Xu,Zhou•ThB1 Wong,Kam Sing•TuD1 Xue ,Yan •WI8 Wu,Anhua•TuK11,WI32 Y Wu,Chengyin•WH4 Yan,C•WI35,WI36 Wu,Dai•ThB1,TuK17 Yan,D•WI35,WI36 Wu,Erheng•TuK42 Yan,Huijie•TuK18 72

Yan,Tian-Min•WG4 Zeng,Xuanke•TuB2 Yan,Xiaona•WI6 Zhai,Chunyang•TuK2 Yang,Fan•WI25 Zhan,Zhiqiang•TuK21 Yang,Kangwen•TuK6 Zhang ,Di-Yu•WI3 Yang,Lei•TuK5,TuK45 Zhang,An•WH4 Yang,Ning•WF2 Zhang,Bao•TuK28,WI17,WI24 Yang,Qi•TuK16,WB4 Zhang,Baolong•TuB3 Yang,Rui•TuK31 Zhang,Bin-bin•TuC3 Yang,Weifeng•ThD4 Zhang,Bo•TuK23,TuK33,TuK34,TuK49 Yang,Xinfan•TuK17 Zhang,C. •TuE3,WC3 Yang,Xiuwei•TuK40 Zhang,C.L. •TuE4 Yang,Y•WI40 Zhang,Cheng•WB3 Yang,Yu-Jun•WI2,WI3 Zhang,Dongwen•TuK4,TuK1,TuK12,TuK14,TuK22, Yang, Zhengang •TuK27,WI27 WI14,WI42 Yang,Ziqiang•TuK30 Zhang,Hao •WI33 Yao,J•WI35,WI36,WD1 Zhang,Hongying•TuK16,WB4 Yao,Jianquan•WG5,ThB5,TuF5,TuH3,TuK9,WG6 Zhang,Huifang•TuK26,ThC3 Yao,Q.J. •ThB4 Zhang,J. •TuE4 Yao,Yong•WI18 Zhang,Jiadong•TuK11 Yao,Zehan•WI13,WF4 Zhang,Jianfa•TuK31 Yasui,Takeshi•WC1 Zhang,Jie•TuE1,TuE5 Ye,Jiasheng•TuK20 Zhang,Kai-Xuan•WG4 Ye,Pengbo•TuK6 Zhang,L.L. •ThA1,TuE4 Yi ,Huan•ThC5 Zhang,Lei•WI11 Yin,Shan•WI29 Zhang,Longhui•WF4,WI13 Yin,Y.•TuG3 Zhang,Peng•ThB1,TuK17 Yoo,Yungjun•TuE2 Zhang,Qi•TuK44 Yu,Fa Long•WI22 Zhang,Qingbin•TuK2 Yu,Jin•TuE5 Zhang,Shunnong•TuH3,WG5 Yu,Lianghong•WA2 Zhang,Sitao•TuK9 Yu,T. P. •TuG3,TuK10 Zhang,W. •ThB4 Yu,Wenfeng•TuK37 Zhang,Weili•ThC3,TuI4,TuK26,WF5 Yu,Yang•ThB5 Zhang,Wenjie•TuK9 Yu,Yao•TuC2 Zhang,X. H. •TuK47 Yuan ,MingHu•WI1 Zhang,X.C•TuE4,ThA1 Yuan,Jianmin•TuK1,TuK14,TuK22,WD3,WH3,WI1 Zhang,Xiang•WH4 4,WI42,WI43 Zhang,Xiansheng•TuK40 Yuan,Xiaodong•TuK31 Zhang,Xiaofan•TuK2 Yuan,Yinghao•TuK8 Zhang,Xiaoli•TuK19 Z Zhang,Xinhai•TuK19 Zaouter,Y.•TuK3 Zhang,Xuejin•WI11 Zeng,H. •ThD1 Zhang,Xueqian•ThC3,WF5,TuI4 Zeng,Heping•TuK6 Zhang,Y•WI37,WI39,TuE4,WG3 Zeng,Hongxin•TuK30 Zhang,Yan•ThD3,ThC4,TuK20 Zeng,Jiaolong•TuK4 Zhang,Ye•WB4 73

Zhang,Yinfu•TuK2 Zheng,Shuiqin•TuB2 Zhang,Ying•TuI4 Zheng,Zhu•WI18 Zhang,Yizhu•WG4 Zhong,J.Q. •ThB4 Zhang,Yuan•WI14 Zhong,Xiangli•WI14 Zhang,Z•WI43 Zhou,C. •WC4 Zhang,Zeyu•ThB5 Zhou,K. •TuK29 Zhang,Zhelin•TuE5 Zhou,Kui•ThB1 Zhang,Zhen•TuE5 Zhou,L. •WC4 Zhang,Ziyue• WI46 Zhou,Siyan•TuK37,WG6 Zhang,Zongzhi•WG5,TuH3,TuK11 Zhou,T. •TuK29 Zhao,Huan•ThC4,ThD3 Zhou,Y. •WH1 Zhao,J•WI43 Zhou,Yueming•WD5 Zhao,Jie•WB3 Zhu,Jiangfeng•TuG1,TuG4 Zhao,Jing•TuK7,WD3 Zhu,Jianyu•WI30 Zhao,Kejia•WI31 Zhu,Liguo•TuF4 Zhao,Kun•TuG4 ,WI38 Zhu,Lipeng•WI13,WF4 Zhao,Lei•WD2 Zhu,Weihua•WG5 Zhao,Litao•ThB5 Zhu,Xiaosong•TuK2 Zhao,Qiyi•WI13,WF4 Zhu,Y. •ThC2 Zhao,Wanying•TuH3,TuK9,TuK18 Zhu,Yiming•WI16 Zhao,Weisheng•TuK24 Zhu,Zhihong•TuK31 Zhao,Xiaoli•WI30 Zhuang,Naifeng•TuK11 Zhao,Xin•WC1 Zhvanya,Irina A.•WG1 Zhao,Yaping•WI23,WI26 Zou,D. B. •TuG3 Zhao,Zengxiu•WH3,TuK1,TuK7,TuK12,TuK14,TuK Zou,Pu•WB5 22,WD3,WI42,WI43 Zou,Ruijiao•TuK21 Zheng Li•WF6 Zou,Yi•TuF4 Zheng Zheng•WC1