Dual-Band Terahertz Left-Handed Metamaterial with Fishnet Structure

• Published in: Chinese physics letters Vol. 28; no. 1; pp. 90 - 93
• Main Authors: Du, Qiu-Jiao (秋妓 杜), Liu, Jin-Song (劲松 刘), Wang, Ke-Jia (可嘉 王), Yi, Xu-Nong (胞农 易), Yang, Hong-Wu (洪武 杨)
• Format: Journal Article
• Language: English
• Published: IOP Publishing 2011
• Subjects: 双波段; 太赫兹; 等效电磁参数; 结构参数; 频率范围
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/28/1/014201

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 mcrit, 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.