Abstract
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, ultrahigh-speed computational imaging has received increasing attention because it synergizes optical engineering with computer science. In this talk, I will review the working principle and representative advances of ultrahigh-speed computational imaging [Optica 5, 1113 (2018); Rep Prog Phys 83, 116101 (2020)]. Then, I will focus the discussion on two research directions in my Laboratory of Applied Computational Imaging. First, I will present compressed ultrafast photography [CUP, Nature 716, 74 (2014), Light: Sci Appl 7, 42 (2018)]—the world’s fastest camera—and its applications in light-matter interactions [Nat Comm 11, 5252 (2020)], instantaneous scattering measurement [Sci Adv 3, e1601814 (2017)], and ultraviolet pulse visualization [Laser Photonics Rev 14, 2000122 (2020)]. I will also talk about our recent work on implementing an optical-streaking CUP system for the advanced materials characterization of rare-earth nanoparticles for optical thermometry [Nat Commum 12, 6401 (2021)]. Second, I will show how the computational imaging paradigm can speed up single-pixel imaging [Nat Commun 13 7879 (2022)], which enables multi-spatiotemporal-scale imaging in different imaging modes and the high-ambient-light environment. I hope that this talk will spark discussions with colleagues and students at the Université de Montréal in new collaborations and new applications using ultrahigh-speed computational imaging.
Biography
Dr. Jinyang Liang is an Associate Professor and the FRQS Research Scholar at the Institut National de la Recherche Scientifique (INRS) – Université du Québec. 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 >50 journal papers and >50 conference proceedings. He has applied for 12 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. 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 T
