来自石墨烯带阵列的可调古斯-汉欣位移。

Tunable Goos-Hänchen shift from graphene ribbon array.

作者信息

Zeng Xiaodong, Al-Amri M, Zubairy M Suhail

出版信息

Opt Express. 2017 Oct 2;25(20):23579-23588. doi: 10.1364/OE.25.023579.

DOI:10.1364/OE.25.023579

Abstract

The Goos-Hänchen (GH) shift of light beam incident on graphene ribbon array is investigated by Green's function method. Due to the resonance effects of leaky surface plasmons on ribbons, the zeroth-order reflection field shows both giant positive and negative GH shifts. By tuning the graphene Fermi level, we can control the shift conveniently. This effect is important to graphene-based metasurface and electro-optical devices.

摘要

采用格林函数方法研究了入射在石墨烯带阵列上光束的古斯-汉欣（GH）位移。由于带状泄漏表面等离子体激元的共振效应，零阶反射场呈现出巨大的正负GH位移。通过调节石墨烯费米能级，我们可以方便地控制这种位移。这种效应对于基于石墨烯的超表面和电光器件具有重要意义。