Tailoring electromagnetically induced transparency effect of terahertz metamaterials on ultrathin substrate  

作　　者：Yonggang ZHANG Jingbo WU Lanju LIANG Gaochao ZHOU Fan ZHENG Chun LI Caihong ZHANG Biaobing JIN 

机构地区：[1]Research Institute of Superconductor Electronics, School of Electronic Science and Engineering,Nanjing University [2]School of Electrical and Information Engineering, Anhui University of Science and Technology [3]School of Electronic and Electrical Engineering, University of Leeds

出　　处：《Science China(Information Sciences)》2016年第4期177-182,共6页中国科学（信息科学）（英文版）

基　　金：supported by National Basic Research Program of China (Grant Nos. 2011CBA00107, 2014CB339800);National Natural Science Foundation of China (Grant Nos. 60990322, 61071009, 61027008, 61007034);Key Programs of Natural Science Foundation of Higher Education Institution of Anhui Province, Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD);Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave

摘　　要：Electromagnetically induced transparency（EIT） is a fascinating phenomenon in optical physics and has been employed in slow light technology. In this work, we use terahertz（THz） metamaterials to mimic EIT phenomenon and study their spectral dependence on the coupling strength between bright and dark resonators.In these metamaterials, two kinds of resonators are located on two different layers separated by a 10-μm-thick polyimide（PI） film. The whole sample is supported by a 5-μm-thick flexible PI film, so the Fabry-Perot resonance at THz can be avoided. The coupling strength is tuned by the translational offset of symmetry axes between two different kinds of resonators, resulting in the change of EIT-like spectra.Electromagnetically induced transparency（EIT） is a fascinating phenomenon in optical physics and has been employed in slow light technology. In this work, we use terahertz（THz） metamaterials to mimic EIT phenomenon and study their spectral dependence on the coupling strength between bright and dark resonators.In these metamaterials, two kinds of resonators are located on two different layers separated by a 10-μm-thick polyimide（PI） film. The whole sample is supported by a 5-μm-thick flexible PI film, so the Fabry-Perot resonance at THz can be avoided. The coupling strength is tuned by the translational offset of symmetry axes between two different kinds of resonators, resulting in the change of EIT-like spectra.

关 键 词：metamaterials EIT flexible ultrathin substrate equivalent conductivity 

分 类 号：O441[理学—电磁学] TB39[理学—物理]