On the nature of photoluminescence in Bismuth-doped silica glass

Abstract We report on the investigation of Bismuth-doped pure silica glass without other co-dopant by the tech- nique of magnetic circular dichroism (MCD), which allows the direct probing of the ground state of optical centres. Taking into account the results of conventional optical spectroscopy, we...

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Autores principales:	Oleksii V. Laguta, Hicham El Hamzaoui, Mohamed Bouazaoui, Vladimir B. Arion, Igor M. Razdobreev
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/570958f738f74dab984562fb34460394
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spelling	oai:doaj.org-article:570958f738f74dab984562fb344603942021-12-02T11:52:24ZOn the nature of photoluminescence in Bismuth-doped silica glass10.1038/s41598-017-03464-82045-2322https://doaj.org/article/570958f738f74dab984562fb344603942017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03464-8https://doaj.org/toc/2045-2322Abstract We report on the investigation of Bismuth-doped pure silica glass without other co-dopant by the tech- nique of magnetic circular dichroism (MCD), which allows the direct probing of the ground state of optical centres. Taking into account the results of conventional optical spectroscopy, we show that the observed MCD bands belong to the centre responsible for the red photoluminescence in this material. Measurements of the temperature and field dependences indicate that the MCD effect is caused by the even-electron system. This, however, opposes the widespread opinion that Bi2+ ions are the origin of red photoluminescence in Bismuth-doped silica glasses. On the other hand, the lasing centre responsi- ble for the near infrared photoluminescence does not exhibit any magnetic optical activity connected to its ground state. As a consequence, we conclude that the ground state of lasing centre is a magnetic singlet with the effective spin S = 0.Oleksii V. LagutaHicham El HamzaouiMohamed BouazaouiVladimir B. ArionIgor M. RazdobreevNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Oleksii V. Laguta Hicham El Hamzaoui Mohamed Bouazaoui Vladimir B. Arion Igor M. Razdobreev On the nature of photoluminescence in Bismuth-doped silica glass
description	Abstract We report on the investigation of Bismuth-doped pure silica glass without other co-dopant by the tech- nique of magnetic circular dichroism (MCD), which allows the direct probing of the ground state of optical centres. Taking into account the results of conventional optical spectroscopy, we show that the observed MCD bands belong to the centre responsible for the red photoluminescence in this material. Measurements of the temperature and field dependences indicate that the MCD effect is caused by the even-electron system. This, however, opposes the widespread opinion that Bi2+ ions are the origin of red photoluminescence in Bismuth-doped silica glasses. On the other hand, the lasing centre responsi- ble for the near infrared photoluminescence does not exhibit any magnetic optical activity connected to its ground state. As a consequence, we conclude that the ground state of lasing centre is a magnetic singlet with the effective spin S = 0.
format	article
author	Oleksii V. Laguta Hicham El Hamzaoui Mohamed Bouazaoui Vladimir B. Arion Igor M. Razdobreev
author_facet	Oleksii V. Laguta Hicham El Hamzaoui Mohamed Bouazaoui Vladimir B. Arion Igor M. Razdobreev
author_sort	Oleksii V. Laguta
title	On the nature of photoluminescence in Bismuth-doped silica glass
title_short	On the nature of photoluminescence in Bismuth-doped silica glass
title_full	On the nature of photoluminescence in Bismuth-doped silica glass
title_fullStr	On the nature of photoluminescence in Bismuth-doped silica glass
title_full_unstemmed	On the nature of photoluminescence in Bismuth-doped silica glass
title_sort	on the nature of photoluminescence in bismuth-doped silica glass
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/570958f738f74dab984562fb34460394
work_keys_str_mv	AT oleksiivlaguta onthenatureofphotoluminescenceinbismuthdopedsilicaglass AT hichamelhamzaoui onthenatureofphotoluminescenceinbismuthdopedsilicaglass AT mohamedbouazaoui onthenatureofphotoluminescenceinbismuthdopedsilicaglass AT vladimirbarion onthenatureofphotoluminescenceinbismuthdopedsilicaglass AT igormrazdobreev onthenatureofphotoluminescenceinbismuthdopedsilicaglass
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On the nature of photoluminescence in Bismuth-doped silica glass

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