基于复合凹槽的光栅型红外线吸收器
Received:July 05, 2017  Revised:September 05, 2017  点此下载全文
引用本文:陈曦,薛文瑞,赵晨,李昌勇.基于复合凹槽的光栅型红外线吸收器[J].Journal of Infrared and Millimeter Waves,2018,37(1):87~92
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Author NameAffiliationE-mail
CHEN Xi College of Physics and Electronic Engineering, Shanxi University 1016980626@qq.com 
XUE Wen-Rui College of Physics and Electronic Engineering, Shanxi University wrxue@sxu.edu.cn 
ZHAO Chen College of Physics and Electronic Engineering, Shanxi University 274736709@qq.com 
LI Chang-Yong State Key Laboratory of Quantum Optics and Quantum Optic Devices, Institute of Laser Spectroscopy, Shanxi University lichyong@sxu.edu.cn 
基金项目:国家自然科学基金(61378039, 61575115);国家基础科学人才培养基金(J1103210)
中文摘要:设计了一种基于LiF和NaF材料的复合凹槽的光栅型红外吸收器.采用频域有限差分法(FDFD)分析了这种吸收器的吸收机理,以及结构参数、入射波的波长和入射角度对其吸收特性的影响.结果表明,对于入射的不同波长的红外线,这种吸收器会形成不同的光学谐振腔,能够在较宽的波长范围内对红外线形成强烈的吸收.在采用优化参数的条件下,在18~70 μm的波长范围和0~80°的入射角范围内,这种吸收器具有良好的吸收效果.文章的研究工作给光栅型红外线吸收器的设计、制作和应用提供了理论基础.
中文关键词:吸收器  光栅  红外  表面等离子
 
Grating-type infrared absorber based on composite grooves
Abstract:A grating-type infrared absorber based on LiF and NaF material composite grooves is designed. The finite-difference frequency-domain (FDFD) method is used to analyze the absorption mechanism. In addition, the influence of the structure parameters of the absorber, the wavelength of the incident wave and the incident angle on the absorption characteristics are investigated. The results show that this absorber will form different optical resonators for incident light of different wavelengths in infrared region, which can strongly absorb infrared light over a wide wavelength range. The absorber has a good absorption performance in the range of 18~70 μm wavelength range and 0~80° of incident by using the optimized parameters. The research work of this paper provides a theoretical basis for the design, fabrication and application of the grating-type infrared absorber.
keywords:Absorber, grating, infrared, surface plasmon
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