Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals

Graphene perfect absorbers with ultranarrow bandwidth are numerically proposed by employing a subwavelength dielectric grating to excite the guided-mode resonance of one-dimensional photonic crystals (1DPCs). Critical coupling of the guided-mode resonance of 1DPCs to graphene can produce perfect abs...

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Autores principales: Long, Yongbing, Shen, Liang, Xu, Haitao, Deng, Haidong, Li, Yuanxing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006081/
https://www.ncbi.nlm.nih.gov/pubmed/27577721
http://dx.doi.org/10.1038/srep32312
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author Long, Yongbing
Shen, Liang
Xu, Haitao
Deng, Haidong
Li, Yuanxing
author_facet Long, Yongbing
Shen, Liang
Xu, Haitao
Deng, Haidong
Li, Yuanxing
author_sort Long, Yongbing
collection PubMed
description Graphene perfect absorbers with ultranarrow bandwidth are numerically proposed by employing a subwavelength dielectric grating to excite the guided-mode resonance of one-dimensional photonic crystals (1DPCs). Critical coupling of the guided-mode resonance of 1DPCs to graphene can produce perfect absorption with a ultranarrow bandwidth of 0.03 nm. The quality factor of the absorption peak reaches a ultrahigh value of 20000. It is also found that the resonant absorption peaks can be tuned by controlling the dispersion line of the guided mode and the period of the grating. When the parameters of the grating and the 1DPCs are suitably set, the perfect absorption peaks can be tuned to any randomly chosen wavelength in the visible wavelength range.
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spelling pubmed-50060812016-09-07 Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals Long, Yongbing Shen, Liang Xu, Haitao Deng, Haidong Li, Yuanxing Sci Rep Article Graphene perfect absorbers with ultranarrow bandwidth are numerically proposed by employing a subwavelength dielectric grating to excite the guided-mode resonance of one-dimensional photonic crystals (1DPCs). Critical coupling of the guided-mode resonance of 1DPCs to graphene can produce perfect absorption with a ultranarrow bandwidth of 0.03 nm. The quality factor of the absorption peak reaches a ultrahigh value of 20000. It is also found that the resonant absorption peaks can be tuned by controlling the dispersion line of the guided mode and the period of the grating. When the parameters of the grating and the 1DPCs are suitably set, the perfect absorption peaks can be tuned to any randomly chosen wavelength in the visible wavelength range. Nature Publishing Group 2016-08-31 /pmc/articles/PMC5006081/ /pubmed/27577721 http://dx.doi.org/10.1038/srep32312 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Long, Yongbing
Shen, Liang
Xu, Haitao
Deng, Haidong
Li, Yuanxing
Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title_full Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title_fullStr Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title_full_unstemmed Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title_short Achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
title_sort achieving ultranarrow graphene perfect absorbers by exciting guided-mode resonance of one-dimensional photonic crystals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006081/
https://www.ncbi.nlm.nih.gov/pubmed/27577721
http://dx.doi.org/10.1038/srep32312
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