Five-Band Terahertz Metamaterial Absorber Based on a Four-Gap Comb Resonator

A novel and simple design of five-band terahertz absorber is investigated. This absorber consists of a four-gap comb resonator and a dielectric slab on top of a metallic board. The simulation results show that the structure has five distinct absorption peaks, each with the absorption of over 98%. Mu...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 33; no. 24; pp. 5151 - 5156
Main Authors Wang, Gui-Zhen, Wang, Ben-Xin
Format Journal Article
LanguageEnglish
Published New York IEEE 15.12.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Absorption
Dielectrics
Electric fields
Metamaterial
Metamaterials
multi-band absorption
Optimized production technology
perfect absorber
Resonant frequency
terahertz
multiband absorption
terahertz
Metamaterial
perfect absorber
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Summary:A novel and simple design of five-band terahertz absorber is investigated. This absorber consists of a four-gap comb resonator and a dielectric slab on top of a metallic board. The simulation results show that the structure has five distinct absorption peaks, each with the absorption of over 98%. Multiband absorption property can be explained by the overlapping of the LC resonances, dipolar response, and high-order resonance of the structure. Moreover, the design gives considerable freedom to shift or change the frequencies of the absorber by varying the arm lengths of the comb. The proposed absorber has potential applications in detection, imaging, and sensing.
Bibliography:ObjectType-Article-1
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ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2015.2497740