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题名:
Engineering the dispersion of metamaterial surface for broadband infrared absorption
作者: Feng, Qin1,2; Pu, Mingbo1; Hu, Chenggang1; Luo, Xiangang1
刊名: Optics Letters
出版日期: 2012
卷号: 37, 期号:11, 页码:2133-2135
学科分类: Electron gas - Infrared absorption - Metamaterials
通讯作者: Luo, X. (lxg@ioe.ac.cn)
文章类型: 期刊论文
中文摘要: 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.
英文摘要: 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.
收录类别: SCI ; Ei
项目资助者: 973 Program of China [2011CB301800] ; National Natural Science Foundation of China [60825405, 61138002, 61177013]
语种: 英语
WOS记录号: WOS:000305085000119
ISSN号: 01469592
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6803
Appears in Collections:微细加工光学技术国家重点实验室(开放室)_期刊论文

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作者单位: 1. 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:
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.
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