CST – Computer Simulation Technology

High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode

Title:
High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode
Author(s):
Mikhail I. Shalaev, Jingbo Sun, Alexander Tsukernik, Apra Pandey, Kirill Nikolskiy, Natalia M. Litchinitser
Source:
ACS Publications
Vol./Issue/Date:
1st January 0001
Year:
2016
Page(s):
pp 6261 - 6266
Keywords:
All-dielectric metasurface, nanoblocks, singular optics, orbital angular momentum, structured light
Abstract:
Metasurfaces are two-dimensional structures enabling complete control on light amplitude, phase, and polarization. Unlike plasmonic metasurfaces, silicon structures facilitate high transmission, low losses, and compatibility with existing semiconductor technologies. We experimentally demonstrate two examples of high-efficiency polarizationsensitive dielectric metasurfaces with 2p phase control in transmission mode (45% transmission efficiency for the vortex converter and 36% transmission efficiency for the beam steering device) at telecommunication wavelengths. Silicon metasurfaces are poised to enable a versatile platform for the realization of all-optical circuitry on a chip.
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