Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths

Abstract Conventional metamaterial absorbers have multilayer designs, where the dielectric interlayer is sandwiched between a top patterned metallic structure and bottom metallic film. Here, we demonstrate that a highly polarization-sensitive perfect absorber canbe realized by replacing the bottom m...

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Autores principales:	Duc Minh Nguyen, Dasol Lee, Junsuk Rho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/69b8b030d81543d38f7a79e93debb5f0
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spelling	oai:doaj.org-article:69b8b030d81543d38f7a79e93debb5f02021-12-02T11:52:21ZControl of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths10.1038/s41598-017-02847-12045-2322https://doaj.org/article/69b8b030d81543d38f7a79e93debb5f02017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02847-1https://doaj.org/toc/2045-2322Abstract Conventional metamaterial absorbers have multilayer designs, where the dielectric interlayer is sandwiched between a top patterned metallic structure and bottom metallic film. Here, we demonstrate that a highly polarization-sensitive perfect absorber canbe realized by replacing the bottom metallic film with a plasmonic grating. Designs for broadband and narrowband of wavelength are proposed and numerically investigated. The designed absorbers perform high light absorption, which is above 90% over the wavelength range of 0.4–1.4 µm for the broadband absorber and 98% for the absorption peak in case of the narrowband design, with a specific polarization of incident light. We find that the absorption is tunable by changing the polarization. Such absorbers offer new approach for active control of light absorbance with strong impacts for solar energy harvesting, light emitting and sensing.Duc Minh NguyenDasol LeeJunsuk RhoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Duc Minh Nguyen Dasol Lee Junsuk Rho Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
description	Abstract Conventional metamaterial absorbers have multilayer designs, where the dielectric interlayer is sandwiched between a top patterned metallic structure and bottom metallic film. Here, we demonstrate that a highly polarization-sensitive perfect absorber canbe realized by replacing the bottom metallic film with a plasmonic grating. Designs for broadband and narrowband of wavelength are proposed and numerically investigated. The designed absorbers perform high light absorption, which is above 90% over the wavelength range of 0.4–1.4 µm for the broadband absorber and 98% for the absorption peak in case of the narrowband design, with a specific polarization of incident light. We find that the absorption is tunable by changing the polarization. Such absorbers offer new approach for active control of light absorbance with strong impacts for solar energy harvesting, light emitting and sensing.
format	article
author	Duc Minh Nguyen Dasol Lee Junsuk Rho
author_facet	Duc Minh Nguyen Dasol Lee Junsuk Rho
author_sort	Duc Minh Nguyen
title	Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
title_short	Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
title_full	Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
title_fullStr	Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
title_full_unstemmed	Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
title_sort	control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/69b8b030d81543d38f7a79e93debb5f0
work_keys_str_mv	AT ducminhnguyen controloflightabsorbanceusingplasmonicgratingbasedperfectabsorberatvisibleandnearinfraredwavelengths AT dasollee controloflightabsorbanceusingplasmonicgratingbasedperfectabsorberatvisibleandnearinfraredwavelengths AT junsukrho controloflightabsorbanceusingplasmonicgratingbasedperfectabsorberatvisibleandnearinfraredwavelengths
_version_	1718395050603315200

Control of light absorbance using plasmonic grating based perfect absorber at visible and near-infrared wavelengths

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