High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode
High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode
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DOI：
10.1021/acs.nanolett.5b02926
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发表时间：
2015-09-01
期刊：
影响因子：
10.8
通讯作者：
Litchinitser, Natalia M.
中科院分区：
文献类型：
--
作者：
Shalaev, Mikhail I.;Sun, Jingbo;Litchinitser, Natalia M.
超颖表面是二维结构，能够完全控制光的振幅、相位和偏振。与等离子体超颖表面不同，硅结构促进高传输、低损耗以及与现有半导体技术的兼容性。我们实验证明了两个例子的高效率的偏振敏感的电介质超颖表面与2 π相位控制的传输模式（45%的传输效率的涡旋转换器和36%的传输效率的光束转向装置）在电信波长。硅超颖表面有望为实现芯片上的全光电路提供一个多功能平台。
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 2 pi 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.