Dynamically adjustable asymmetric transmission and polarization conversion for linearly polarized terahertz wave  

作　　者：Tong Li Fang-Rong Hu Yi-Xian Qian Jing Xiao Long-Hui Zhang Wen-Tao Zhang Jia-Guang Han 李彤;胡放荣;钱义先;肖靖;张隆辉;张文涛;韩家广(Guangxi Key Laboratory of Optoelectronic Information Processing,Guilin University of Electronic Technology,Guilin 541004,China;Key Laboratory of Optical Information Detecting and Display Technology,Zhejiang Normal University,Jinhua 321004,China;Air Force Logistics College,Xuzhou 221000,China)

机构地区：[1]Guangxi Key Laboratory of Optoelectronic Information Processing,Guilin University of Electronic Technology,Guilin 541004,China [2]Key Laboratory of Optical Information Detecting and Display Technology,Zhejiang Normal University,Jinhua 321004,China [3]Air Force Logistics College,Xuzhou 221000,China

出　　处：《Chinese Physics B》2020年第2期288-293,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11574059 and 61965005);the National Technology Major Special Project,China(Grant No.2017ZX02101007-003);the Natural Science Foundation of Guangxi Zhuang Autonomous Region,China(Grant No.2018GXNSFAA050043);the Guangxi Special Expert Program and Innovation Project of Guangxi Graduate Education,China(Grant Nos.2019YCXS088 and 2019YCXS094);the Foundation from Guangxi Key Laboratory of Automatic Detection Technology and Instrument,China(Grant No.YQ16101).

摘　　要：The asymmetric transmission(AT) and polarization conversion of terahertz(THz) wave play a vital role in future THz communication,spectrum,and information processing.Generally,it is very difficult and complicated to actively control the AT of electromagnetic(EM) wave by using traditional devices.Here,we theoretically demonstrate a stereo-metamaterial(stereo-MM) consisting of a layer of metal structure and a layer of phase transition structure with a polyimide spacer in between.The performance of the device is simulated by using the finite-integration-technology(FIT).The results show that the AT and polarization conversion of linearly polarized wave can be dynamically controlled in a range of 1.0 THz-1.6 THz when the conductivity c,F of vanadium dioxide(VO2) is changed under the external stimulation.This study provides an example of actively controlling of the AT and polarization conversion of the EM wave.The asymmetric transmission(AT)and polarization conversion of terahertz(THz)wave play a vital role in future THz communication,spectrum,and information processing.Generally,it is very difficult and complicated to actively control the AT of electromagnetic(EM)wave by using traditional devices.Here,we theoretically demonstrate a stereo-metamaterial(stereo-MM)consisting of a layer of metal structure and a layer of phase transition structure with a polyimide spacer in between.The performance of the device is simulated by using the finite-integration-technology(FIT).The results show that the AT and polarization conversion of linearly polarized wave can be dynamically controlled in a range of 1.0 THz-1.6 THz when the conductivity σ of vanadium dioxide(VO2)is changed under the external stimulation.This study provides an example of actively controlling of the AT and polarization conversion of the EM wave.

关 键 词：stereo-metamaterial(stereo-MM) ASYMMETRIC transmission(AT) polarization conversion VANADIUM dioxide(VO2) 

分 类 号：O441.4[理学—电磁学]