Open AccessTemperature-controlled terahertz polarization conversion bandwidth
Author(s) -
Jing Zhao,
Chunmei Ouyang,
Xieyu Chen,
Yanfeng Li,
Caihong Zhang,
Longcheng Feng,
Biaobing Jin,
Jiajun Ma,
Yi Liu,
Shoujun Zhang,
Quan Xu,
Jiaguang Han,
Weili Zhang
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.431622
Subject(s) - terahertz radiation , optics , broadband , materials science , polarization (electrochemistry) , terahertz gap , optoelectronics , terahertz spectroscopy and technology , terahertz metamaterials , physics , far infrared laser , laser , chemistry
Active control of metasurfaces has attracted widespread attention because of the adjustable electromagnetic properties obtained. Here we designed and experimentally studied a dynamically controllable polarization converter in the terahertz band. By designing the structural parameters and utilizing the insulator-to-metal phase transition of vanadium dioxide and principle of current resonance, dynamic tunability of the polarization conversion function from dual-broadband (0.45∼0.77 THz and 0.97∼1.2 THz) to ultra-broadband (0.38∼1.20 THz) can be realized with a high polarization conversion ratio. The scheme proposed here can find potential applications in integrated terahertz systems, sensing, imaging and communications areas.