Compact multiband left-handed metamaterial at terahertz frequencies  

作　　者：杜秋姣 刘劲松 杨洪武 

机构地区：[1]Wuhan National Laboratory for Optoelectronics,School of Optoelectronic Science and Engineering,Huazhong University of Science and Technology [2]School of Mathematics and Physics,China University of Geosciences [3]School of Civil Engineering and Mechanics,Huazhong University of Science and Technology

出　　处：《Chinese Optics Letters》2011年第11期70-73,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 10974063 and 10876010);the Foundation Research Funds for the Central Universities (No. 2010MS041)

摘　　要：We design and analyze a novel multiband left-handed metamaterial based on a fishnet-like structure at terahertz （THz） frequencies.The metamaterial exhibits simultaneous negative refractions around the frequencies of 0.48,1.05,and 1.19 THz for the electromagnetic （EM） wave normal incidence,and around the frequencies of 0.20,0.79,and 1.13 THz for parallel incidence.The simulated results verify the left-handed properties.A particularly important observation is the capability of the proposed metamaterial with a single geometrical structure to display multifrequency operations in a unit cell.The compact metamaterial is a major step toward the miniaturization of THz materials and devices suitable for multifrequencies.We design and analyze a novel multiband left-handed metamaterial based on a fishnet-like structure at terahertz （THz） frequencies.The metamaterial exhibits simultaneous negative refractions around the frequencies of 0.48,1.05,and 1.19 THz for the electromagnetic （EM） wave normal incidence,and around the frequencies of 0.20,0.79,and 1.13 THz for parallel incidence.The simulated results verify the left-handed properties.A particularly important observation is the capability of the proposed metamaterial with a single geometrical structure to display multifrequency operations in a unit cell.The compact metamaterial is a major step toward the miniaturization of THz materials and devices suitable for multifrequencies.

关 键 词：METAMATERIALS 

分 类 号：TN04[电子电信—物理电子学]