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Physics Colloquium: Hui Cao, "Mesoscopic Optics"

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Physics Colloquium: Hui Cao, "Mesoscopic Optics"
When Apr 11, 2018
from 04:00 PM to 05:00 PM
Where MR418N
Contact Name
Contact Phone 212-650-7443
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Mesoscopic Optics

Prof. Hui Cao
Dept. of Applied Physics, Yale University

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.

Bio:
Hui Cao is the Frederick W. Beinecke Professor of Applied Physics and Professor of Physics at Yale University. Her research focuses on mesoscopic physics, complex nanophotonics, and biophotonics. Cao received her PhD degree in Applied Physics from Stanford University in 1997. Cao is the recipient of the NSF CAREER award, the Packard Fellowship, the Sloan Fellowship, the Maria Goeppert-Mayer Award and the Guggenheim Fellowship. She was awarded the Friedrich Wilhelm Bessel Research Award by the Alexander von Humboldt Foundation, and the Outstanding Young Researcher Award by the Overseas Chinese Physics Association. She shared the William E. Lamb Medal for Laser Physics and Quantum Optics with A. D. Stone and V. V. Yakovlev. She is a fellow of both APS ad OSA.