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Engineering the dispersion of metamaterial surface for broadband infrared absorption
Feng, Qin1,2; Pu, Mingbo1; Hu, Chenggang1; Luo, Xiangang1; Luo, X. (lxg@ioe.ac.cn)
Source PublicationOptics Letters
Volume37Issue:11Pages:2133-2135
2012
Language英语
ISSN01469592
Indexed BySCI ; Ei
WOS IDWOS:000305085000119
Subtype期刊论文
AbstractWe propose a broadband infrared absorber by engineering the frequency dispersion of metamaterial surface (metasurface) to mimic an ideal absorbing sheet. With a thin layer of structured nichrome, a polarizationindependent absorber with absorption larger than 97% is numerically demonstrated over a larger than one octave bandwidth. It is shown that the bandwidth enhancement is related with the transformation of the Drude model of free electron gas in metal film to the Lorentz oscillator model of a bound electron in the structured metallic surface. We believe that the concept of dispersion engineering may provide helpful guidance for the design of a broadband absorber. © 2012 Optical Society of America.; We propose a broadband infrared absorber by engineering the frequency dispersion of metamaterial surface (metasurface) to mimic an ideal absorbing sheet. With a thin layer of structured nichrome, a polarizationindependent absorber with absorption larger than 97% is numerically demonstrated over a larger than one octave bandwidth. It is shown that the bandwidth enhancement is related with the transformation of the Drude model of free electron gas in metal film to the Lorentz oscillator model of a bound electron in the structured metallic surface. We believe that the concept of dispersion engineering may provide helpful guidance for the design of a broadband absorber. © 2012 Optical Society of America.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6803
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorLuo, X. (lxg@ioe.ac.cn)
Affiliation1. State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Science, P.O. Box 350, Chengdu 610209, China
2. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
Recommended Citation
GB/T 7714
Feng, Qin,Pu, Mingbo,Hu, Chenggang,et al. Engineering the dispersion of metamaterial surface for broadband infrared absorption[J]. Optics Letters,2012,37(11):2133-2135.
APA Feng, Qin,Pu, Mingbo,Hu, Chenggang,Luo, Xiangang,&Luo, X. .(2012).Engineering the dispersion of metamaterial surface for broadband infrared absorption.Optics Letters,37(11),2133-2135.
MLA Feng, Qin,et al."Engineering the dispersion of metamaterial surface for broadband infrared absorption".Optics Letters 37.11(2012):2133-2135.
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