中国激光, 2019, 46 (6): 0614006, 网络出版: 2019-06-14
太赫兹液晶可调谐功能器件 下载: 2375次
Terahertz Tunable Devices Based on Liquid Crystal
太赫兹技术 石墨烯 光子晶体 超材料 液晶器件 terahertz technology graphene photonic crystals metamaterials liquid crystal devices
摘要
介绍了不同液晶材料在太赫兹(THz)波段的光学各向异性和外场调制特性。在此基础上,综述了几种基于液晶与人工电磁微结构相结合的THz功能器件,该器件可实现对THz波的调谐滤波、电磁诱导透明、相位调制以及偏振控制功能等;系统地分析了液晶与人工电磁微结构的相互作用机理、THz波长尺度下液晶的外场调控规律与表面相互作用。此外,还对THz液晶光子器件的研究发展趋势进行了展望。
Abstract
This study aims to introduce the optical anisotropy and modulation characteristics of different liquid crystal materials in the terahertz (THz) regime. Herein, several THz functional devices were reviewed based on the combination of liquid crystals and artificial electromagnetic microstructures, realizing the functions, such as tunable filtering, electromagnetic induced transparency, phase modulation, and polarization control of THz waves. Moreover, the interaction mechanism between liquid crystals and artificial electromagnetic microstructures was analyzed and discussed, along with the regulation law of external field and surface interaction at the THz wavelength scale. In addition, the development trend in the applications of THz liquid crystal photonic devices was prospected.
冀允允, 范飞, 于建平, 许士通, 程洁嵘, 王湘晖, 常胜江. 太赫兹液晶可调谐功能器件[J]. 中国激光, 2019, 46(6): 0614006. Yunyun Ji, Fei Fan, Jianping Yu, Shitong Xu, Jierong Cheng, Xianghui Wang, Shengjiang Chang. Terahertz Tunable Devices Based on Liquid Crystal[J]. Chinese Journal of Lasers, 2019, 46(6): 0614006.