期刊
OPTICS EXPRESS
卷 24, 期 9, 页码 9288-9294出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.009288
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资金
- National Projects of Key Scientific Instruments in China [2012YQ16000702]
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
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