期刊
ACS PHOTONICS
卷 5, 期 5, 页码 1660-1664出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.7b01191
关键词
circularly polarized beam splitter; dielectric metasurface; Rochon prism; geometric phase; hologram
类别
资金
- National Natural Science Foundation of China [61590933, 11474010, 11627803]
- Youth Innovation Promotion Association CAS [2015030]
- CAS Key Technology Talent Program
- Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SYS031]
We design and fabricate the Rochon-prism-like planar circularly polarized beam splitters based on dielectric metasurfaces by simultaneously controlling the geometric phase and the propagation phase via manipulation of the orientations and the sizes of the constituent silicon nanoblocks. The special splitters deviate only one of the circular polarizations while leave the other undeviated, acting like a Rochon prism for linearly polarized light, and their efficiencies can be as high as 66.7% with an extinction ratio of 27. The mechanism makes it possible to fabricate metasurface holograms that can only be reconstructed by either of two circular polarizations while hidden from the other. The functionality of beam splitting and polarization dependent decryption based on dielectric metasurfaces enables the potential applications in both miniaturized polarizing optical systems and information security and processing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据