Spoof surface plasmons resonance effect and tunable electric response of improved metamaterial in the terahertz regime  

作　　者：王玥 张丽颖 梅金硕 张文超 童一静 

机构地区：[1]Department of Electrical Science and Technology, Harbin University of Science and Technology [2]Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education,Harbin University of Science and Technology [3]School of Engineering and Applied Science, George Washington University

出　　处：《Chinese Physics B》2015年第12期483-487,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61201075);the Natural Science Foundation of Heilongjiang Province;China(Grant No.F2015039);the Young Scholar Project of Heilongjiang Provincial Education Bureau;China(Grant No.1254G021);the China Postdoctoral Science Foundation(Grant No.2012M511507);the Science Funds for the Young Innovative Talents of Harbin University of Science and Technology;China(Grant No.201302)

摘　　要：We propose an improved design and numerical study of an optimized tunable plasmonics artificial material resonator in the terahertz regime. We demonstrate that tunability can be realized with a transmission intensity as much as - 61% in the lower frequency resonance, which is implemented through the effect of photoconductive switching under photoexcitation.In the higher frequency resonance, we show that spoof surface plasmons along the interface of metal/dielectric provide new types of electromagnetic resonances. Our approach opens up possibilities for the interface of metamaterial and plasmonics to be applied to optically tunable THz switching.We propose an improved design and numerical study of an optimized tunable plasmonics artificial material resonator in the terahertz regime. We demonstrate that tunability can be realized with a transmission intensity as much as - 61% in the lower frequency resonance, which is implemented through the effect of photoconductive switching under photoexcitation.In the higher frequency resonance, we show that spoof surface plasmons along the interface of metal/dielectric provide new types of electromagnetic resonances. Our approach opens up possibilities for the interface of metamaterial and plasmonics to be applied to optically tunable THz switching.

关 键 词：surface plasmons METAMATERIALS TERAHERTZ RESONANCE 

分 类 号：O441[理学—电磁学]