基于液晶控制超表面的电光开关

Electro-optical switching by liquid-crystal controlled metasurfaces.

作者信息

Decker Manuel, Kremers Christian, Minovich Alexander, Staude Isabelle, Miroshnichenko Andrey E, Chigrin Dmitry, Neshev Dragomir N, Jagadish Chennupati, Kivshar Yuri S

机构信息

Nonlinear Physics Centre and Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200, Australia.

出版信息

Opt Express. 2013 Apr 8;21(7):8879-85. doi: 10.1364/OE.21.008879.

DOI:10.1364/OE.21.008879

PMID:23571978

Abstract

We study the optical response of a metamaterial surface created by a lattice of split-ring resonators covered with a nematic liquid crystal and demonstrate millisecond timescale switching between electric and magnetic resonances of the metasurface. This is achieved due to a high sensitivity of liquid-crystal molecular reorientation to the symmetry of the metasurface as well as to the presence of a bias electric field. Our experiments are complemented by numerical simulations of the liquid-crystal reorientation.

摘要

我们研究了由覆盖有向列型液晶的裂环谐振器晶格构成的超材料表面的光学响应，并展示了该超表面在磁共振和电共振之间的毫秒级切换。这是由于液晶分子重新取向对超表面对称性以及偏置电场的存在具有高度敏感性而实现的。我们的实验通过对液晶重新取向的数值模拟得到了补充。