Process-controllable modulation of plasmon-induced transparency in terahertz metamaterials  

作　　者：Hao Sun Jie Yang Hengzhu Liu Dan Wu Xin Zheng 孙豪;杨杰;刘衡竹;吴丹;郑鑫(College of Computer,National University of Defense Technology,Changsha 410073,China;National Innovation Institute of Defense Technology,Beijing 100010,China;Graduate School,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]College of Computer,National University of Defense Technology,Changsha 410073,China [2]National Innovation Institute of Defense Technology,Beijing 100010,China [3]Graduate School,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Optics Letters》2021年第1期100-105,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11804387,11802339,11805276,11902358,61805282,and 61801498);the Scientific Researches Foundation of National University of Defense Technology(Nos.ZK18-03-22,ZK18-01-03,and ZK18-03-36)。

摘　　要：Recently reported plasmon-induced transparency(PIT)in metamaterials endows the optical structures in classical systems with quantum optical effects.In particular,the nonreconfigurable nature in metamaterials makes multifunctional applications of PIT effects in terahertz communications and optical networks remain a great challenge.Here,we present an ultrafast process-selectable modulation of the PIT effect.By incorporating silicon islands into diatomic metamaterials,the PIT effect is modulated reversely,depending on the vertical and horizontal configurations,with giant modulation depths as high as 129%and 109%.Accompanied by the enormous switching of the transparent window,remarkable slow light effect occurs.

关 键 词：terahertz metamaterials ultrafast photoswitching plasmon-induced transparency all-optical modulation 

分 类 号：TB34[一般工业技术—材料科学与工程] O441[理学—电磁学]