Dual-Band Terahertz Left-Handed Metamaterial with Fishnet Structure
DU Qiu-Jiao1,2, LIU Jin-Song1**, WANG Ke-Jia1, YI Xu-Nong1, YANG Hong-Wu3
1Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 2School of Mathematics and Physics, China University of Geosciences, Wuhan 430074 3School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074
Dual-Band Terahertz Left-Handed Metamaterial with Fishnet Structure
DU Qiu-Jiao1,2, LIU Jin-Song1**, WANG Ke-Jia1, YI Xu-Nong1, YANG Hong-Wu3
1Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 2School of Mathematics and Physics, China University of Geosciences, Wuhan 430074 3School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074
摘要We present the design of a dual-band left-handed metamaterial with fishnet structure in the terahertz regime. Its left-handed properties are described by the retrieved effective electromagnetic parameters. We introduce an equivalent circuit which offers a theoretical explanation for the left-handed behavior of the dual-band fishnet metamaterial, and investigate its losses receiving higher figure of merit. The design is beneficial to the development of frequency agile and broadband THz materials and devices. The dual-band fishnet metamaterial can be extended to infrared and optical frequency ranges by regulating the structural parameters.
Abstract：We present the design of a dual-band left-handed metamaterial with fishnet structure in the terahertz regime. Its left-handed properties are described by the retrieved effective electromagnetic parameters. We introduce an equivalent circuit which offers a theoretical explanation for the left-handed behavior of the dual-band fishnet metamaterial, and investigate its losses receiving higher figure of merit. The design is beneficial to the development of frequency agile and broadband THz materials and devices. The dual-band fishnet metamaterial can be extended to infrared and optical frequency ranges by regulating the structural parameters.
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2011, Vol. 28 
