报告题目：Coded Optical Streaking for Real-time Ultrahigh-Speed Imaging
主持人：张诗按 研究员
时间：2023年11月14日（周二）09:30
地点：光学大楼B225会议室
报告人简介：
Dr. Jinyang Liang is an Associate Professor at the Institut National de la Recherche Scientifique (INRS) – Université du Québec. He holds Canada Research Chair in Ultrafast Computational Imaging (Tier II). He directs the Laboratory of Applied Computational Imaging (LACI). His research interests cover ultrafast imaging, high-precision laser beam shaping, optical physics, and biophotonics. He has published >55 journal papers and >50 conference proceedings. He has applied for >20 U.S. patents on ultrafast optical imaging technologies. He is a Senior Member of Optica and SPIE and serves as an Associate Editor of Optica’s Photonics Research and a Senior Editor of Springer’s PhotoniX. He received the 2019 Young Scientist Prize from IUPAP, the 2017 Educational Award–Gold from Edmund Optics, and the 2017 Discovery Accelerator Supplement Award from NSERC. He received his Ph.D. degree in Electrical Engineering from the University of Texas at Austin, in 2012. From 2012 to 2017, he was a postdoctoral trainee at Washington University in St. Louis and the California Institute of Technology.
报告内容简介：
Visualizing transient events in the durations of their occurrences (i.e., real time) is indispensable to understanding many physical, chemical, and biological processes. Among existing methods, real-time ultrahigh-speed imaging based on coded optical streaking has received increasing attention because of its high image quality, high adaptability, and broad applicability. In this talk, I will review the working principles and limitations in representative ultrahigh-speed imaging modalities. Then, I will focus the discussion on three research directions in my Laboratory of Applied Computational Imaging in the past three years. First, I will present compressed optical-streaking ultrahigh-speed photography for the advanced characterization of rare-earth-doped nanoparticles for optical thermometry [Nat Commun 12, 6401 (2021); IEEE J Selected Top Signal Process16, 688 (2022)]. Second, I will discuss how coded optical double-streaking can speed up single-pixel imaging [Nat Commun13, 7879 (2022)], which enables multi-spatiotemporal-scale visualization in different modes and under the high-ambient-light environment at up to 12,000 frames per second. Finally, I will show how the dynamic optical diffraction, generated by the microsecond transition between two masks loaded onto a programmable grating, can be used as a new gating mechanism for ultrahigh-speed mapping photography [Optica 10, 1223 (2023)]