标题:Tunable plasmon-induced transparency based on asymmetric coupling in three-dimensional Dirac semimetal
作者:Guo, Xiaohan; Zhang, Huiyun; Chen, Huan; Zhang, Yuping
作者机构:[Guo, Xiaohan; Zhang, Huiyun; Chen, Huan; Zhang, Yuping] Shandong Univ Sci & Technol, Coll Elect Commun & Phys, Qingdao, Peoples R China.; [Zhang, H 更多
通讯作者:Zhang, Huiyun
通讯作者地址:[Zhang, HY]Shandong Univ Sci & Technol, Coll Elect Commun & Phys, Qingdao, Peoples R China;[Zhang, HY]Shandong Univ, State Key Lab Crystal Mat, Jinan, 更多
来源:OPTICAL ENGINEERING
出版年:2018
卷:57
期:5
DOI:10.1117/1.OE.57.5.057104
关键词:plasmonics; metamaterial; terahertz
摘要:We demonstrate a plasmonic analog of electromagnetically induced transparency in a simple planar metamaterial structure, which consists of two bright three-dimensional (3-D) Dirac semimetal films (DSFs). Through the coupling in the asymmetric elements, a pronounced transparency peak within a broad transmission resonance spectrum is activated. In addition, the transmission spectrum can be tuned by varying the Fermi energy of 3-D Dirac semimetal. Moreover, higher group delays of more than 6 ps are obtained under different energies, and we can achieve the capability of controlling the group delay by changing Fermi energy because of the spectral tunability. The proposed DSF-based plasmonically induced transparency system may pave the way for potential applications in tunable terahertz switching, sensors, and slow-light devices. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
收录类别:EI;SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047766782&doi=10.1117%2f1.OE.57.5.057104&partnerID=40&md5=7854ec0862c592f11eb4fab048e9aa7a
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