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）
时 间：2019年11月26日（周二）上午10:45
地 点：光电大楼1026室
邀 请 人：顾敏 院士
报告内容：
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].
References:
[1] 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).
[2] 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).
[3] 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).
报告人简介：
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:
Associate Editor, Optica (since 2016)
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)