Composite metamaterials with dual-band magnetic resonances in the terahertz frequency regime

Autor:	Li, Ming, Wen, Zhenchao, Fu, Jinxin, Fang, Xu, Dai, Yaomin, Liu, Rongjuan, Han, Xiufeng, Qiu, Xianggang
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1088/0022-3727/42/11/115420
Popis:	Composite metamaterials(CMMs) combining a subwavelength metallic hole array (i.e. one-layer fishnet structure) and an array of split-ring resonators(SRRs) on the same board are fabricated with gold films on silicon wafer. Transmission measurements of the CMMs in the terahertz range have been performed. Dual-band magnetic resonances, namely, a LC resonance at 4.40 THz and an additional magnetic resonance at 8.64 THz originating from the antiparallel current in wire pairs in the CMMs are observed when the electrical field polarization of the incident light is parallel to the gap of the component SRR. The numerical simulations agree well with the experimental results and further clarify the nature of the dual-band magnetic resonances. Comment: 4 figures, 14 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0904.4078 Zobrazit plný text záznamu View this record from Arxiv