OSC Colloquium: Hui Cao

    Thursday, October 1, 2020 - 3:30pm - 5:00pm
    Virtual Via Zoom

    Open to campus and public.


    Speaker: Hui Cao

    Topic: Mesoscopic Optics

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    Random scattering of light, e.g., in paint, cloud and biological tissue, is a common process of both fundamental interest and practical relevance. The interference of multiply scattered waves leads to remarkable phenomena in mesoscopic physics such as Anderson localization and universal conductance fluctuations. In applications, optical scattering is the main obstacle to imaging or sending information through turbid media. Recent developments of adaptive wavefront shaping in optics enabled imaging and focusing of light through opaque samples. By selective coupling to high or low transmission eigenchannels, we varied the transmission of a laser beam through a highly scattering system by two orders of magnitude, and drastically changed the energy density distribution inside the system. Furthermore, we utilized the multiple scattering of light in a random structure to realize a chip-scale spectrometer. The speckle pattern is used as a fingerprint to recover an arbitrary spectrum. Such a spectrometer has good spectral resolution and wide frequency range of operation.

    Speaker Bio(s): 

    Hui Cao is the John C. Malone Professor of Applied Physics and of Physics, and a professor of Electrical Engineering at Yale University. She received her Ph.D. degree in Applied Physics from Stanford University in 1997.  Prior to joining the Yale faculty in 2008, she was on the faculty of Northwestern University from 1997 to 2007.  Her technical interests and activities are in the areas of mesoscopic physics, complex photonic materials and devices, nanophotonics, and biophotonics. She authored or co-authored one monograph, twelve book-chapters, seven review articles and 260 journal papers. She is a Fellow of the APS, OSA, AAAS and IEEE.  



    Colloquium will start at 3:30pm, following will be a meet and greet with Hui Cao.