"Metasurfaces for Planar Photonics and Spin
Optoelectronics" by Xingjie Ni
Monday, March 30, 2015 11:00 AM to 12:00 PM
CREOL Room 103
CREOL Room 103
Celebrating the International Year of Light 2015
Xingjie Ni
Nanoscale Science and Engineering Center, University of
California, Berkeley
Abstract:
Metamaterials, or artificially engineered,
subwavelength-scale structures, allow us to control the behavior of
electromagnetic/acoustic/thermal fields with flexibility and performance that
are unattainable with naturally available materials. Their two-dimensional
counterparts –metasurfaces extend these capabilities even further. Optical
metasurfaces offer fascinating possibilities of controlling light with
surface-confined flat components which can manipulate the phase and amplitude
of the scattered light directly. Many new physics and unparalleled applications
have been demonstrated using metasurfaces such as bending the light abnormally,
generating optical vortex beams, and enhancing the optical spin-orbit
interaction. In my talk, I will focus on some recent developments on
metasurfaces which lead to several new applications like building ultra-thin
planar micro-lenses, creating high-resolution holograms, direct coupling
between photon-spin and electron orbital momenta, and engineering remote
quantum vacuum.
Biography:
Xingjie Ni received his B.S. degree in Engineering Physics
in 2005 and his M.S. degree in Automation in 2007 from Tsinghua University,
Beijing, China. He completed his Ph.D. degree in Electrical and Computer
Engineering at Purdue University, West Lafayette, Indiana in 2012, under the
supervision of Vladimir M. Shalaev. Currently he is a postdoctoral fellow at
University of California, Berkeley, working in the laboratory of Xiang Zhang.
His research interests are in nanophotonics and optoelectronics, which
encompass photonic/plasmonic nanodevices, electromagnetic metamaterials,
integrated photonics, photonic sensors, transformation optics devices,
nonlinear optics, optical communications, photovoltaics, and optical quantum
information processing.
For additional information:
Dr. Ayman Abouraddy
407-823-6809
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