Mixed plasmons coupling for expanding the bandwidth of near-perfect absorption at visible frequencies

被引：95

作者：

Hu, Chenggang ^{[1
]}

Liu, Liyuan ^{[1
]}

Zhao, Zeyu ^{[1
]}

Chen, Xu'nan ^{[1
]}

Luo, Xiangang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 19期

基金：

中国国家自然科学基金;

关键词：

LIGHT-ABSORPTION; TRANSMISSION;

D O I：

10.1364/OE.17.016745

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically investigate the electromagnetic response of mixed-size sub-wavelength square hole array (M-SHA) combined with thick metal layer (TML). Near-perfect absorption with bandwidth about 17nm is firstly observed. Field distribution and dispersion relationship indicate that mixed surface plasmons (M-SPs) coupling is supported by MSHA and TML. The absorption band is proved to be dominated by M-SPs coupling. (C) 2009 Optical Society of America

引用

页码：16745 / 16749

页数：5

共 20 条

[1]

AVITZOUR Y, WIDE ANGLE INFRARED

[2] Physical origin of photonic energy gaps in the propagation of surface plasmons on gratings [J].