Perfect narrow band absorber for sensing applications | Zendy

Shiwen Luo | Zendy; Jun Zhao | Zendy; Duluo Zuo | Zendy; Xinbing Wang | Zendy

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Perfect narrow band absorber for sensing applications

Author(s) -

Shiwen Luo,

Jun Zhao,

Duluo Zuo,

Xinbing Wang

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.009288

Subject(s) - materials science , figure of merit , optics , absorption (acoustics) , dielectric , attenuation coefficient , optoelectronics , metal , physics , metallurgy

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°. 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.

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