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

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...

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Bibliographic Details
Published in:Nano letters 2015-09, Vol.15 (9), p.6261-6266
Main Authors: Shalaev, Mikhail I, Sun, Jingbo, Tsukernik, Alexander, Pandey, Apra, Nikolskiy, Kirill, Litchinitser, Natalia M
Format: Article
Language:English
Subjects:
Beam steering
Beams (radiation)
Devices
Nanostructure
Orbitals
Semiconductors
Silicon
Transmission efficiency
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Summary: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 polarization-sensitive dielectric metasurfaces with 2π 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.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.5b02926