Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared

Broadband optical absorption structures in the near infrared by coupling monolayer-graphene with periodical metal structures are proposed and demonstrated numerically. Optical absorption of graphene with over-50%-absorption bandwidth up to hundreds of nanometer caused by magnetic dipole resonances a...

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Autores principales: Fan, Yansong, Guo, Chucai, Zhu, Zhihong, Xu, Wei, Wu, Fan, Yuan, Xiaodong, Qin, Shiqiao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6135823/
https://www.ncbi.nlm.nih.gov/pubmed/30209289
http://dx.doi.org/10.1038/s41598-018-32052-7
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author Fan, Yansong
Guo, Chucai
Zhu, Zhihong
Xu, Wei
Wu, Fan
Yuan, Xiaodong
Qin, Shiqiao
author_facet Fan, Yansong
Guo, Chucai
Zhu, Zhihong
Xu, Wei
Wu, Fan
Yuan, Xiaodong
Qin, Shiqiao
author_sort Fan, Yansong
collection PubMed
description Broadband optical absorption structures in the near infrared by coupling monolayer-graphene with periodical metal structures are proposed and demonstrated numerically. Optical absorption of graphene with over-50%-absorption bandwidth up to hundreds of nanometer caused by magnetic dipole resonances and magnetic coupling effect are investigated in detail, and the demonstrated bandwidths are one order higher than those caused by dielectric guiding mode resonances. In addition, the influences of geometrical parameters of structures are fully analyzed and these demonstrated structures show angular-insensitive absorption for oblique incidence in a large angular range. The demonstrated absorption structures in this work provide new design ideas in the realization of advanced graphene-based optoelectronic devices.
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spelling pubmed-61358232018-09-15 Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared Fan, Yansong Guo, Chucai Zhu, Zhihong Xu, Wei Wu, Fan Yuan, Xiaodong Qin, Shiqiao Sci Rep Article Broadband optical absorption structures in the near infrared by coupling monolayer-graphene with periodical metal structures are proposed and demonstrated numerically. Optical absorption of graphene with over-50%-absorption bandwidth up to hundreds of nanometer caused by magnetic dipole resonances and magnetic coupling effect are investigated in detail, and the demonstrated bandwidths are one order higher than those caused by dielectric guiding mode resonances. In addition, the influences of geometrical parameters of structures are fully analyzed and these demonstrated structures show angular-insensitive absorption for oblique incidence in a large angular range. The demonstrated absorption structures in this work provide new design ideas in the realization of advanced graphene-based optoelectronic devices. Nature Publishing Group UK 2018-09-12 /pmc/articles/PMC6135823/ /pubmed/30209289 http://dx.doi.org/10.1038/s41598-018-32052-7 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Fan, Yansong
Guo, Chucai
Zhu, Zhihong
Xu, Wei
Wu, Fan
Yuan, Xiaodong
Qin, Shiqiao
Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title_full Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title_fullStr Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title_full_unstemmed Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title_short Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
title_sort monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6135823/
https://www.ncbi.nlm.nih.gov/pubmed/30209289
http://dx.doi.org/10.1038/s41598-018-32052-7
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