报告题目：Ultrasensitive Raman Spectroscopy
报 告 人：Vladislav V. Yakovlev教授, 美国德州农工大学（Texas A&M University）
邀 请 人：顾敏 院士
Optical imaging and sensing are routinely used in everyday life to remotely identify objects. Raman spectroscopy is a powerful spectroscopic technique, which allows analysis of chemical composition and structure of materials without any need for sample preparation. With all the advantages, a significant drawback of Raman spectroscopy is its low efficiency, which makes analysis of low-concentrated solutions and gaseous species rather challenging.
I will show how a 150-years old technique based on the use of integrated cavities can be successfully combined with modern Raman spectroscopy tools to achieve an unprecedented sensitivity of detection. I will describe the operating principle of an integrated cavity, demonstrate some potential applications, and explain how Raman spectroscopy can be used in the most efficient way for environmental sensing [1-3].
 J. Bixler, M. Cone, B. Hokr, E. S. Fry, V. V. Yakovlev, and M. O. Scully, “Ultrasensitive detection of waste products in water using fluorescence emission cavity enhanced spectroscopy,” Proceedings National Academy of Sciences USA 111(20), 7208-7211 (2014).
 J. V. Thompson, B. H. Hokr, W. Kim, C. W. Ballmann, B. Applegate, J. Jo, A. Yamilov, H. Cao, M. O. Scully, and V. V. Yakovlev, “Enhanced coupling of light into a turbid medium through microscopic interface engineering,” Proceedings National Academy of Sciences USA 114 (30), 7941-7946 (2017).
 J. Thompson, B. Hokr, W. Kim, C. Ballmann, B. E. Applegate, J. Jo, A. Yamilov, H. Cao, M. O. Scully, and V. V. Yakovlev, “Enhanced optical coupling and Raman scattering via microscopic interface engineering,” Applied Physics Letters 111(20), 201105 (2017).
Vladislav V. Yakovlev is a Professor of Electrical and Computer Engineering, Physics and Astronomy, and Biomedical Engineering at Texas A&M University. He currently serves as:
Member of Editorial Board, Journal of Biomedical Optics (since 2017)
Member of Editorial Board, Applied Sciences (since 2018)
SPIE – Optical Elastography and Tissue Biomechanics, Program committee member since 2017
SPIE – Nonlinear Frequency Generation and Conversion, Program committee member since 2018
SPIE - Synthesis and Photonics of Nanoscale Materials, Program committee member since 2018
Organizer of DOD/NASA/Australia/US meeting on Quantum Imaging (since 2017)
International advisor to the Aston Photonics Center, Birmingham UK (since 2017)
International scientific advising committee to Bio-Brillouin COST program, European Union (since 2017)