Perfect narrow band absorber for sensing applications

被引：164

作者：

Luo, Shiwen ^{[1
]}

Zhao, Jun ^{[1
]}

Zuo, Duluo ^{[1
]}

Wang, Xinbing ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 09期

关键词：

PLASMON RESONANCES; LIGHT-ABSORPTION; SURFACE; METAMATERIALS; SPECTROSCOPY; BROAD; AU;

D O I：

10.1364/OE.24.009288

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design and numerically investigate a perfect narrow band absorber based on a metal-metal-dielectric-metal structure which consists of periodic metallic nanoribbon arrays. The absorber presents an ultra narrow absorption band of 1.11 nm with a nearly perfect absorption of over 99.9% in the infrared region. For oblique incidence, the absorber shows an absorption more than 95% for a wide range of incident angles from 0 to 50 degrees. Structure parameters to the influence of the performance are investigated. The structure shows high sensing performance with a high sensitivity of 1170 nm/RIU and a large figure of merit of 1054. The proposed structure has great potential as a biosensor. (c) 2016 Optical Society of America

引用

页码：9288 / 9294

页数：7

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