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 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.
Department of Electrical Engineering, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States.
Mikhail I
MI
Shalaev
Department of Electrical Engineering, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States.
Jingbo
J
Sun
Toronto Nanofabrication Centre, University of Toronto , Toronto, ON M5S 3G4, Canada.
Alexander
A
Tsukernik
CST, Inc. , San Mateo, California 94404, United States.
Apra
A
Pandey
Physics Department, M.V. Lomonosov Moscow State University , Moscow 119991, Russia.
Kirill
K
Nikolskiy
Department of Electrical Engineering, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States.
Natalia M
NM
Litchinitser
All-dielectric metasurface; nanoblocks; orbital angular momentum; singular optics; structured light