Multiband Metamaterial Absorber at Terahertz Frequencies  

作　　者：续宗成 高润梅 丁春峰 张雅婷 姚建铨 

机构地区：[1]Institute of Laser and Opto-electronics and Key Laboratory of Opto-electronics Information Science and Technology, Tianjin University, Tianjin 300072 [2]Department of Physics, Tianjin University Renai College, Tianjin 301636 [3]College of science, Guilin University of Technology, Guilin 541004

出　　处：《Chinese Physics Letters》2014年第5期72-75,共4页中国物理快报（英文版）

摘　　要：We propose a multi-band metamaterial absorber operating at terahertz frequencies. The design, characteriza- tion, and theoretical calculation of the high performance metamaterial absorber are reported. The multi-band metamaterial absorber consists of two metallic layers separated by a dielectric spacer. Theoretical and simulated results show that the metamaterial absorber has four distinct absorption points at frequenc/es 0.57 THz, 1.03 THz, 1.44 THz and 1.89 THz, with the absorption rates of 99.9%, 90.3%, 83.0%, 96.1%, respectively. Two single band metamaterial absorbers and a dual band metamaterial absorber on the top layer are designed. Some multi-band absorbers can be designed by virtue of combining some single band absorbers. The multiple-reflection theory is used to explain the absorption mechanism of our investigated structures.We propose a multi-band metamaterial absorber operating at terahertz frequencies. The design, characteriza- tion, and theoretical calculation of the high performance metamaterial absorber are reported. The multi-band metamaterial absorber consists of two metallic layers separated by a dielectric spacer. Theoretical and simulated results show that the metamaterial absorber has four distinct absorption points at frequenc/es 0.57 THz, 1.03 THz, 1.44 THz and 1.89 THz, with the absorption rates of 99.9%, 90.3%, 83.0%, 96.1%, respectively. Two single band metamaterial absorbers and a dual band metamaterial absorber on the top layer are designed. Some multi-band absorbers can be designed by virtue of combining some single band absorbers. The multiple-reflection theory is used to explain the absorption mechanism of our investigated structures.

分 类 号：O451[理学—无线电物理] TM25[理学—物理]