Ultrathin multi-band planar metamaterial absorber based on standing wave resonances

We present a planar waveguide model and a mechanism based on standing wave resonances to interpret the unity absorptions of ultrathin planar metamaterial absorbers. The analytical model predicts that the available absorption peaks of the absorber are corresponding to the fundamental mode and only it...

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Published inOptics express Vol. 20; no. 25; pp. 27756 - 27765
Main Authors Peng, Xiao-Yu, Wang, Bing, Lai, Shumin, Zhang, Dao Hua, Teng, Jing-Hua
Format Journal Article
LanguageEnglish
Published United States 03.12.2012
Subjects
Air
Computer Simulation
Light
Manufactured Materials
Microwaves
Models, Theoretical
Optics and Photonics - methods
Photons
Terahertz Radiation
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Summary:We present a planar waveguide model and a mechanism based on standing wave resonances to interpret the unity absorptions of ultrathin planar metamaterial absorbers. The analytical model predicts that the available absorption peaks of the absorber are corresponding to the fundamental mode and only its odd harmonic modes of the standing wave. The model is in good agreement with numerical simulation and can explain the main features observed in typical ultrathin planar metamaterial absorbers. Based on this model, ultrathin planar metamaterial absorbers with multi-band absorptions at desired frequencies can be easily designed.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.027756