Optical metasurfaces for high angle steering at visible wavelengths.
Optical metasurfaces for high angle steering at visible wavelengths.
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DOI：
10.1038/s41598-017-02167-4
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发表时间：
2017-05-23
影响因子：
4.6
通讯作者：
Klug M
中科院分区：
文献类型：
--
作者：
Lin D;Melli M;Poliakov E;Hilaire PS;Dhuey S;Peroz C;Cabrini S;Brongersma M;Klug M
超颖表面已经促进了用平面和平面光子结构替换常规光学元件。超颖表面的先前设计限于小偏转角和小入射角范围。在这里，我们已经创建了两种类型的硅基超颖表面，以引导可见光到一个大的偏转角度。这些结构在很宽的入射角范围内表现出高衍射效率。我们已经展示了基于传统薄膜硅工艺的透射和反射模式下的超颖表面，这些超颖表面适用于高性能器件的大规模制造。
Metasurfaces have facilitated the replacement of conventional optical elements with ultrathin and planar photonic structures. Previous designs of metasurfaces were limited to small deflection angles and small ranges of the angle of incidence. Here, we have created two types of Si-based metasurfaces to steer visible light to a large deflection angle. These structures exhibit high diffraction efficiencies over a broad range of angles of incidence. We have demonstrated metasurfaces working both in transmission and reflection modes based on conventional thin film silicon processes that are suitable for the large-scale fabrication of high-performance devices.