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Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector

This work proposed a miniaturized nanowire laser with high end-facet reflection. The high end-facet reflection was realized by integrating an Ag grating between the nanowire and the substrate. Its propagation and reflection properties were calculated using the finite elements method. The simulation...

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Detalles Bibliográficos
Autores principales: Wei, Wei, Yan, Xin, Zhang, Xia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221942/
https://www.ncbi.nlm.nih.gov/pubmed/32260322
http://dx.doi.org/10.3390/nano10040680
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author Wei, Wei
Yan, Xin
Zhang, Xia
author_facet Wei, Wei
Yan, Xin
Zhang, Xia
author_sort Wei, Wei
collection PubMed
description This work proposed a miniaturized nanowire laser with high end-facet reflection. The high end-facet reflection was realized by integrating an Ag grating between the nanowire and the substrate. Its propagation and reflection properties were calculated using the finite elements method. The simulation results show that the reflectivity can be as high as 77.6% for a nanowire diameter of 200 nm and a period of 20, which is nearly three times larger than that of the nanowire without a metal grating reflector. For an equal length of nanowire with/without the metal grating reflector, the corresponding threshold gain is approximately a quarter of that of the nanowire without the metal grating reflector. Owing to the high reflection, the length of the nanowire can be reduced to 0.9 μm for the period of 5, resulting in a genuine nanolaser, composed of nanowire, with three dimensions smaller than 1 μm (the diameter is 200 nm). The proposed nanowire laser with a lowered threshold and reduced dimensions would be of great significance in on-chip information systems and networks.
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spelling pubmed-72219422020-05-22 Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector Wei, Wei Yan, Xin Zhang, Xia Nanomaterials (Basel) Article This work proposed a miniaturized nanowire laser with high end-facet reflection. The high end-facet reflection was realized by integrating an Ag grating between the nanowire and the substrate. Its propagation and reflection properties were calculated using the finite elements method. The simulation results show that the reflectivity can be as high as 77.6% for a nanowire diameter of 200 nm and a period of 20, which is nearly three times larger than that of the nanowire without a metal grating reflector. For an equal length of nanowire with/without the metal grating reflector, the corresponding threshold gain is approximately a quarter of that of the nanowire without the metal grating reflector. Owing to the high reflection, the length of the nanowire can be reduced to 0.9 μm for the period of 5, resulting in a genuine nanolaser, composed of nanowire, with three dimensions smaller than 1 μm (the diameter is 200 nm). The proposed nanowire laser with a lowered threshold and reduced dimensions would be of great significance in on-chip information systems and networks. MDPI 2020-04-04 /pmc/articles/PMC7221942/ /pubmed/32260322 http://dx.doi.org/10.3390/nano10040680 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wei, Wei
Yan, Xin
Zhang, Xia
Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title_full Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title_fullStr Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title_full_unstemmed Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title_short Miniaturized GaAs Nanowire Laser with a Metal Grating Reflector
title_sort miniaturized gaas nanowire laser with a metal grating reflector
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221942/
https://www.ncbi.nlm.nih.gov/pubmed/32260322
http://dx.doi.org/10.3390/nano10040680
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