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Lecture Notes for Nonlinear and Quantum Optics PHYS 953 Fall 2010 Lecture Notes for Nonlinear and Quantum Optics PHYS 953 Fall 2010 Brian Washburn, Ph.D. Kansas State University Copyright: This syllabus and all lectures copyright September 2010 by Brian R. Washburn. PHYS 953 – Adv. Topics/Non-linear and of mini-projects. The mini-projects will be a Quantum Optics - Fall 2010 detailed solution of interconnected problems Lecture: T/U, 1:05-2:20 p.m. CW 145 related to lecture topics. The problems will need to be solved using resources beyond the textbook Textbooks: Nonlinear Optics, Boyd; Introductory and class notes. The purpose of the mini-projects Quantum Optics, Gerry and Knight; is to mimic problem-solving scenarios found in a research environment. Suggested References: Introduction to Quantum There will be between 5-7 mini-projects, each Optics, From Light Quanta to Quantum Teleportation, given with two or more weeks for completion. Paul; The Quantum Challenge, Greenstein and Zajonc; Quantum Optics, Walls and Milburn; Coherence and Working on the mini-projects in groups is strongly Quantum Optics, Mandel and Wolf; Nonlinear Optics, encouraged, but you will need to write up the Shen; Nonlinear Fiber Optics, Agrawal; Handbook of assignment on your own. Nonlinear Optics, Sutherland; Handbook of Nonlinear Optical Crystals, Dmitriev, Gurzadyan, and Nikogosyan; Final Project: There will be a final project for the Electromagnetic Noise and Quantum Optical class but no final exam. The final project will be Measurements, Haus; an investigation of a topic or problem in the areas of nonlinear and quantum optics, that will involve Instructor: Dr. Brian R. Washburn, CW 36B, (785) a literature search and some original work. The 532-2263, [email protected]. Office hours: final project will consist of three parts: M/W/F 9:30-10:30 PM or by appt. Part 1: Abstract and bibliography Part 2: 6 page paper plus references Prerequisites: A solid foundation in undergraduate- Part 3: 15 minute presentation level quantum mechanics, electromagnetism, and optics. Late Projects: No project will be accepted after its due date unless prior arrangements have been Course Objective: The purpose of this course is to made. Please inform me with possible conflicts provide an introduction to the field of nonlinear before the due date, and other arrangements will optics, exploring the physical mechanisms, be made. applications, and experimental techniques. Furthermore the fundamentals of quantum optics Class Material: Extra class materials are posted will be taught in the second half in this course. on K-state Online, including papers and tutorials. Connections between quantum and nonlinear optics will be highlighted throughout the semester. My Disabilities: If you have any condition such as a goal is for students to end up with a working physical or learning disability, which will make it knowledge of nonlinear optics and a conceptual difficult for you to carry out the work as I have understanding of the foundations of quantum optics. outlined it or which will require academic accommodations, please notify me and contact the Grading: Disabled Students Office (Holton 202), in the first Exam 1 150 pts 300 pts two weeks of the course. Exam 2 150 pts Mini-Projects 500 pts Plagiarism: Plagiarism and cheating are serious offenses and may be punished by failure on the Final Project 200 pts exam, paper or project; failure in the course; Total possible 1000 pts and/or expulsion from the University. For more Exams: There will be two exams during the information refer to the “Academic Dishonesty” semester. The format will be a take-home exam to policy in K-State Undergraduate Catalog and the be completed over 24 hours. Undergraduate Honor System Policy on the Provost’s web page: http://www.ksu.edu/honor/. Mini-Projects: Problems in nonlinear and quantum Copyright: This syllabus and all lectures copyright September 2010 optics are quite involved, so traditional homework by Brian R. Washburn. assignments will not properly teach the material. So, the homework for this course will be in the form BRW 8/13/2010 Tentative Course Schedule, Nonlinear and Quantum Optics, PHYS 953, Fall 2010 Date Topic Chapters Projects Aug. 24 (T) Class overview: review of linear optics and the semi-classical treatment of light Review of material dispersion and absorption Aug. 26 (U) Introduction to nonlinear optics: the nonlinear susceptibility B1 ―Formal definitions ―Nonlinear optics and mechanics: analogy to anharmonic motion Aug. 31 (T) The Maxwell’s wave equation in a nonlinear medium B1 Symmetry and nonlinear optical properties Sept. 1 (U) Second order nonlinear effects B2 MP1 Due ―Coupled equations: Sum frequency and second harmonic generation ―Phase matching in second harmonic crystals Sept. 7 (T) Second harmonic generation with ultrashort pulses B2 ―Phasematching and bandwidth issues Sept. 9 (U) Difference and sum frequency generation B2 ―Parametric amplification in crystals, optical parametric oscillators Sept. 14 (T) No Class (need to make this day up) Sept. 16 (U) No Class (need to make this day up) Sept. 21 (T) Applications for second harmonic generation B2 ―Ultrashort pulse measurements Sept. 23 (U) Applications for second harmonic generation MP2 Due ―Carrier-envelope phase measurement: the f-to-2f interferometer Sept. 28 (T) Catch up day! Sept. 30 (U) Third order nonlinear effects: Intensity dependent refractive index; four-wave mixing B4, B13 Nonlinear fiber optics: fiber parametric oscillators Oct. 5 (T) More nonlinear fiber optics B4, B13 ―Pulse propagation in a third order nonlinear medium, soliton generation Exam 1 Oct 6 (W) Exam 1 Due Oct. 7 (U) Spontaneous and stimulated Raman scattering B4 ―Spontaneous Raman scattering ―Stimulated Raman scattering in third order media Oct. 12 (T) More on stimulated Raman scattering: CARS spectroscopy B9 Oct. 14 (U) Third order effects in gases: applications for short pulse generation B9 MP3 Due Oct. 19 (T) High field processes: higher harmonic generation B13 Oct. 21 (U) Introduction to quantum optics: What is a photon? G1 ―The photoelectric effect ―The Hanbury-Brown and Twiss experiment Oct. 26 (T) No Class (need to make this day up) Oct. 28 (U) What is a photon? G1 ―The photoelectric effect revisited: Lamb and Scully ―The Aspect experiments Nov. 2 (T) What is a photon? G2 ―Wheeler’s delayed choice experiment ―Quantum beat experiments Nov. 4 (U) Field quantization and coherent states G2 Nov. 9 (T) More on coherent states G2,G3 MP4 Due Nov. 11 (U) Interferometry with a single photon G2,G3 Nov. 16 (T) Bell’s theorem and quantum entanglement G9 ―EPR Paradox and Bell’s Theorem Exam 2 Nov. 17 (W) Exam 2 Due Final project part 1 due Nov. 18 (U) Optical tests of EPR: violations of the Bell’s inequality G9 Nov. 23 (T) Thanksgiving Break Nov. 25 (U) Thanksgiving Break Nov. 30 (T) Nonclassical light: squeezed states G9 Dec. 2 (U) Optical tests of quantum mechanics G9 MP5 Due Dec. 7 (T) Catch up day! Final project part 2 due Dec. 9 (U) Final Project Presentations Final project part 3 due Dec. 14 (T) Final Project Presentations: Exam Period 2:00 PM – 3:50 PM Books: B= Boyd, Nonlinear Optics, G= Gerry and Knight, Introductory Quantum Optics; BRW 8/13/2010 The Frequency Comb Time domain (Pulses in time) ∆φ 2∆φ E(t) Carrier-envelope phase slip from pulse to pulse because group and phase velocities differ t repetition rate Frequency domain (Comb of lines) I(f) repetition Stable frequency comb if f0 = fr ∆φ/2π frequency 1) Repetition rate (fr) fr locked 2) Offset frequency (f0) (phase slip) locked f 0 fn = nfr + f0 Pulsed lasers must give a frequency comb Pump Beam Gain Output fm = mc/2leff leff m = 2 cw laser m = 3 mode-locked cw mode-locked laser Intensity Frequency Domain Frequency Comb-like nature of ultrafast lasers 1979- mode-locked (pulsed) dye laser used as comb – 500 ps pulses ~0.003 nm, ~1 GHz wide Na Optical Frequency Metrology Offset f un RF Beat I(f) frequency repetition frequency f f0 = fr ∆f/2π r f 0 fn = nfr + f0 Frequency comb as a spectral ruler References: Udem, Reichert, Holwartz, Hänsch, Phys. Rev. Lett., vol. 82 (1999) Jones et al., Science, vol. 288 (2000) Udem, Holwartz, Hänsch, Nature, vol. 416 (2002) Supercontinuum generation for self referencing f0 Supercontinuum spectrum f-to-2f Interferometer 1.0 0.8 0.6 0.4 0.2 Normalized Intensity Normalized 0.0 1000 1200 1400 1600 1800 2000 2200 Wavelength (nm) - D. J. Jones, S. A. Diddams, J. K. Ranka, A. Stentz, R. S. Windeler, J. L. Hall, and S. T. Cundiff, "Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis," Science 288, 635-9 (2000). f-to-2f Interferometer f-to-2f interferometer Optical Intensity (dBm) -3010 Repetition Rate, f SHG (LiIO ) r Fundamental 3 0 2200 nm 1100 nm -40 -10 f -f beat f +f beat SHGr 0 r 0 λ/2 -50-20 1100 nm -30 -60 optical filteroptical filter -40 polarizer -70-50 RF Spectral (dB) Power PD SMF 1100 nm (dBm) (dBm) Power Power Spectral Spectral -60 bandpass 25 301000 35 401050 45 501100 55 601150 65 701200 75 Frequencywavelength (MHz) (nm) An octave of supercontinuum allow the generation of beat frequencies with a SNR of 30 dB Co-linear all fiber geometry fCEO electrical signal to locking electronics BPF PD HNLF 2060 nm 1030 nm WDM SMF PPLN supercontinuum Colinear f-to-2f Inteferometer Locking Electronics fCEO control to current error ÷512 source Loop out Phase from Filter Detector 1.064 GHz 64 MHz f-to-2f Syn. 2.078125 MHz Syn. 1.0 GHz f control rep HV Loop to PZT Syn. ~49.8 MHz Source Filter from frep Nonlinear propagation in fiber: nonlinearity only 1.0 Final Intensity
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