太赫兹科学与电子信息学报2024，Vol.22Issue(7)：695-702,8.DOI:10.11805/TKYDA2023432
基于双层VO2的可调谐宽带太赫兹超材料吸收器
Tunable wideband terahertz metamaterial absorber based on double-layer VO2
摘要
Abstract
A wideband terahertz metamaterial absorber is proposed based on the phase transition properties of VO2,which consists of two VO2 pattern layers,two polyimide dielectric layers and a metal reflector layer.The absorption characteristics,electric field distribution and tunability of the absorber are simulated and analyzed,and the results show that the bandwidth of the designed absorber with an absorption rate of more than 90%is 2.56 THz.The absorber stacks two layers of periodic cells with the same structure but different sizes,effectively extending the bandwidth.Moreover,by controlling the phase transition of VO2 from the insulating state to the metallic state,the absorptivity can be continuously adjusted.In addition,by studying the absorption performance of the designed metamaterial absorber under different polarization angles and incident angles,it is found that the absorber is polarization independent and absorption insensitive at large incident angles.The designed absorber is expected to be widely used in areas of terahertz communication,imaging and detector.关键词
太赫兹/超材料吸收器/可调谐/宽频带Key words
terahertz/metamaterial absorber/tunable/broadband分类
信息技术与安全科学引用本文复制引用
董亮,向环琦,朱磊..基于双层VO2的可调谐宽带太赫兹超材料吸收器[J].太赫兹科学与电子信息学报,2024,22(7):695-702,8.基金项目
黑龙江省自然科学基金资助项目(LH2022F053) （LH2022F053）
国家自然科学基金资助项目(62075052) （62075052）
中央财政引导地方科技发展资助项目(SBZY2021E076) （SBZY2021E076）
黑龙江省博士后科研基金资助项目(LBH-Q21195) （LBH-Q21195）
黑龙江省高校基本科研业务费专项资金资助项目(145209151) （145209151）
