期刊
NANO LETTERS
卷 13, 期 3, 页码 1086-1091出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl304392b
关键词
Plasmonics; metasurface; polarization; color filter; nanophotonics; waveplate
类别
资金
- ONR MURI [N00014-10-1-0942]
- Norman Hackerman Advanced Research Program
The response of optical metasurfaces is usually narrowband, and mechanisms to increase their bandwidth often clash with causality and passivity constraints of materials. Here we are able to theoretically and experimentally demonstrate that broadband, strong polarization conversion and quarter-wave plate functionality may be achieved using a single, ultrathin planar metasurface in the visible regime. Our realized sample is based on interleaved silver nanorods with properly tailored frequency dispersion that introduce an abrupt flat 90 degrees phase shift for orthogonal polarizations over a thickness of few tens of nanometers, achieving achromatic quarter-wave plate behavior covering a good portion of the visible spectrum. Analogous design principles are extended to cover the entire visible spectrum and beyond.
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