Omnidirectional, polarization-insensitive and broadband thin absorber in the terahertz regime

被引：500
作者：
Ye, Yu Qian [1 ,3 ]
Jin, Yi [1 ]
He, Sailing [1 ,2 ]
机构：
[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China
[2] Royal Inst Technol, Sch Elect Engn, Div Electromagnet Theory, S-10044 Stockholm, Sweden
[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 03期
基金：
中国国家自然科学基金; 瑞典研究理事会;
关键词：
PHOTONIC CRYSTAL; ABSORPTION; METAMATERIALS; FABRICATION; LIGHT;
D O I：
10.1364/JOSAB.27.000498
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A nearly omnidirectional THz absorber for both transverse electric (TE) and transverse magnetic (TM) polarizations is proposed. Through the excitation of the magnetic polariton in a metal-dielectric layer, the incident light is perfectly absorbed in a thin thickness that is about 25 times smaller than the resonance wavelength. By simply stacking several such structural layers with different geometrical dimensions, the bandwidth of this strong absorption can be effectively enhanced due to the hybridization of magnetic polaritons in different layers. (C) 2010 Optical Society of America
引用
收藏
页码：498 / 504
页数：7
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