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Highly efficient and broadband mid-infrared metamaterial thermal emitter for optical gas sensing

Gong, Yongkang, Wang, Zuobin, Li, Kang, Uggalla, Leshan, Huang, Jungang, Copner, Nigel, Zhou, Yang, Qiao, Dun and Zhu, Jiuyuan 2017. Highly efficient and broadband mid-infrared metamaterial thermal emitter for optical gas sensing. Optics Letters 42 (21) , pp. 4537-4540. 10.1364/OL.42.004537

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Abstract

Development of a novel, cost-effective, and highly efficient mid-infrared light source has been identified as a major scientific and technological goal within the area of optical gas sensing. We have proposed and investigated a mid-infrared metamaterial thermal emitter based on micro-structured chromium thin film. The results demonstrate that the proposed thermal light source supports broadband and wide angular absorption of both TE- and TM-polarized light, giving rise to broadband thermal radiation with averaged emissivity of ∼0.94 in a mid-infrared atmospheric window of 8–14 μm. The proposed microphotonic concept provides a promising alternative mid-infrared source and paves the way towards novel optical gas sensing platforms for many applications.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: The Optical Society of America
ISSN: 0146-9592
Last Modified: 12 Jul 2019 12:08
URI: http://orca.cf.ac.uk/id/eprint/119579

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