AD-ASOPS The easy way for delay scanning from femtosecond to millisecond time scales ULTRAFAST PUMP-PROBE SPECTROSCOPY KEYWORDS Pump-probe experiments Time-resolved Pump-probe spectroscopy measures the response Multi-scale time dynamics of a sample as a function of time after photo- excitation. Using ultrafast lasers for generating pump and probe pulses separated by a varying time delay makes possible the study of ultrafast phenomena down to the femtosecond time scale. INTELLECTUAL PROPERTY French patent n° 11 55799, X-CNRS PCT (USA, EU, JAPAN) n° 14/122,005, X-CNRS AD-ASOPS: ACADEMIC PARTNER Laboratoire d’Optique et Biosciences Arbitrary Detuning - ASynchronous OPtical Sampling Ecole Polytechnique – CNRS – INSERM 91128 PALAISEAU France For dynamics lasting longer than a few nanoseconds, while requiring ps and sub-ps resolution, http://www.lob.polytechnique.fr it is necessary to use two different laser systems as pump and probe sources. AD-ASOPS is a plug-and-play technique that can be easily applied to any couple of femtosecond laser systems without any particular condition on their repetition rate. It thus greatly extends pump-probe experimental possibilities compared to previous techniques such as conventional ASOPS. INDUSTRIAL PARTNER Greenfield Technology, 1 bis, rue Marcel Paul 91300 MASSY France http://www.greenfieldtechnology.com SCIENTIFIC CONTACT Laura ANTONUCCI Laboratoire d’Optique et Biosciences Ecole Polytechnique – CNRS – INSERM [email protected] MAIN ADVANTAGES OF AD-ASOPS PATENT CONTACT - Temporal scan with no moving parts Séverine Pillet, - High scanning speed Project Manager - Sub-picosecond time resolution Service Recherche Partenariale et Propriété Intel- lectuelle - Maximum scanning time range only limited by the pump-laser repetition rate - Possibility of application either to oscillators or amplified systems [email protected] - Straightforward implementation, including for pre-existing laser systems - Low cost ACKNOWLEDGEMENTS Conseil Général de l’Essonne (ASTRE 2014) APPLICATIONS Spectroscopy in physics, chemistry or biology, optoelectronics, optoelectronic sampling SCIENTIFIC PUBLICATIONS L. Antonucci, X. Solinas, A. Bonvalet, and M. Joffre, “Asynchronous optical sampling with arbitrary detuning between laser repetition rates,” Opt. Express 20, pp. 17928-17937 (2012) L. Antonucci, A. Bonvalet, X. Solinas, M. R. Jones, M. H. Vos and M. Joffre, “Arbitrary-detuning asynchronous optical sampling pump-probe spectroscopy of bacterial reaction centers,” Opt. Lett. 38, pp. 3322-3324 (2013) .