Broadband infrared absorbers with stacked double chromium ring resonators

A broadband absorber in the infrared wavelength range from 1 μm up to 5 μm is designed and demonstrated with stacked double chromium ring resonators on a reflective chromium mirror. The near-perfect broadband absorption is realized by combining the multilayer impedance match in the short wavelength...

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Bibliographic Details
Published inOptics express Vol. 25; no. 23; p. 28295
Main Authors Deng, Huixu, Stan, Liliana, Czaplewski, David A., Gao, Jie, Yang, Xiaodong
Format Journal Article
LanguageEnglish
Published United States Optical Society of America 13.11.2017
Subjects
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
MATERIALS SCIENCE
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Summary:A broadband absorber in the infrared wavelength range from 1 μm up to 5 μm is designed and demonstrated with stacked double chromium ring resonators on a reflective chromium mirror. The near-perfect broadband absorption is realized by combining the multilayer impedance match in the short wavelength range and the double plasmonic resonances in the long wavelength range, which is illustrated with an equivalent circuit model for the impedance analysis. The broadband absorber is proved to be angle-insensitive and polarization-independent due to the geometrical symmetry. Lastly, the thermal analysis for heat generation and temperature distributions inside the absorber structure is also investigated.
Bibliography:AC02-06CH11357
National Science Foundation (NSF)
USDOE Office of Science (SC), Basic Energy Sciences (BES)
US Department of the Navy, Office of Naval Research (ONR)
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.028295