Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot

Quadratic electro-optic effects (QEOEs) and electro-absorption (EA) process in a GaN/AlGaN spherical quantum dot are theoretically investigated. It is found that the magnitude and resonant position of third-order nonlinear optical susceptibility depend on the nanostructure size and aluminum mole fra...

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Autores principales: Kouhi, Mohammad, Vahedi, Ali, Akbarzadeh, Abolfazl, Hanifehpour, Younes, Joo, Sang Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2014
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3994964/
https://www.ncbi.nlm.nih.gov/pubmed/24646318
http://dx.doi.org/10.1186/1556-276X-9-131
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author Kouhi, Mohammad
Vahedi, Ali
Akbarzadeh, Abolfazl
Hanifehpour, Younes
Joo, Sang Woo
author_facet Kouhi, Mohammad
Vahedi, Ali
Akbarzadeh, Abolfazl
Hanifehpour, Younes
Joo, Sang Woo
author_sort Kouhi, Mohammad
collection PubMed
description Quadratic electro-optic effects (QEOEs) and electro-absorption (EA) process in a GaN/AlGaN spherical quantum dot are theoretically investigated. It is found that the magnitude and resonant position of third-order nonlinear optical susceptibility depend on the nanostructure size and aluminum mole fraction. With increase of the well width and barrier potential, quadratic electro-optic effect and electro-absorption process nonlinear susceptibilities are decreased and blueshifted. The results show that the DC Kerr effect in this case is much larger than that in the bulk case. Finally, it is observed that QEOEs and EA susceptibilities decrease and broaden with the decrease of relaxation time.
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spelling pubmed-39949642014-05-01 Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot Kouhi, Mohammad Vahedi, Ali Akbarzadeh, Abolfazl Hanifehpour, Younes Joo, Sang Woo Nanoscale Res Lett Nano Express Quadratic electro-optic effects (QEOEs) and electro-absorption (EA) process in a GaN/AlGaN spherical quantum dot are theoretically investigated. It is found that the magnitude and resonant position of third-order nonlinear optical susceptibility depend on the nanostructure size and aluminum mole fraction. With increase of the well width and barrier potential, quadratic electro-optic effect and electro-absorption process nonlinear susceptibilities are decreased and blueshifted. The results show that the DC Kerr effect in this case is much larger than that in the bulk case. Finally, it is observed that QEOEs and EA susceptibilities decrease and broaden with the decrease of relaxation time. Springer 2014-03-19 /pmc/articles/PMC3994964/ /pubmed/24646318 http://dx.doi.org/10.1186/1556-276X-9-131 Text en Copyright © 2014 Kouhi et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Nano Express
Kouhi, Mohammad
Vahedi, Ali
Akbarzadeh, Abolfazl
Hanifehpour, Younes
Joo, Sang Woo
Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title_full Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title_fullStr Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title_full_unstemmed Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title_short Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
title_sort investigation of quadratic electro-optic effects and electro-absorption process in gan/algan spherical quantum dot
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3994964/
https://www.ncbi.nlm.nih.gov/pubmed/24646318
http://dx.doi.org/10.1186/1556-276X-9-131
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