DocumentCode
3582039
Title
Terahertz metamaterial absorber using asymmetric resonator
Author
Wen, Yongzheng ; Ma, Wei ; Bailey, Joe ; Matmon, Guy ; Aeppli, Gabriel ; Yu, Xiaomei
Author_Institution
National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
fYear
2014
Firstpage
220
Lastpage
222
Abstract
A terahertz (THz) absorber using asymmetric split ring resonators (ASRs) was designed, fabricated and characterized. As the symmetry of a split ring resonator (SRR) is broken, the trapped mode resonance is excited, which shows higher absorption and Q factor than the dipole resonance of the symmetric resonator. By displacing the gap from center by 0.5µm, an absorber with the highest measured absorptivity of 0.99 is realized. The bandwidth of 0.61THz with the absorptivity beyond 0.9 is 2.5 times as wide as that of the symmetric dipole peak.
Keywords
Absorption; Bandwidth; Gold; Metamaterials; Physics; Q-factor; Resonant frequency; Absorber; THz technology; asymmetry; metamaterial; trapped mode;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference (APMC), 2014 Asia-Pacific
Type
conf
Filename
7068048
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