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EXAFS studies of the local structure of bismuth centers in multicomponent silica glass based optical fiber preforms

EXAFS studies of the local structure of bismuth centers in multicomponent silica glass based optical fiber preforms
EXAFS studies of the local structure of bismuth centers in multicomponent silica glass based optical fiber preforms
An Extended X-ray Absorption Fine Structure (EXAFS) analysis of the local structure of bismuth in silicate-glass based optical fiber preforms exhibiting broadband near-infrared luminescence is presented. The valence state of the bismuth ions in alumino-silicate and yttria-alumino-silicate glass hosts is revealed to be Bi3+ and the local geometry is suggested to be a trigonal oxygen pyramid with the electron lone pair positioned opposite to the oxygen atom plane. Furthermore we found that the incorporation of Y2O3 into alumino-silicate glass host does not result in any change in the surrounding Bi structure.
bi-doped optical fiber preforms, exafs, bismuth
0022-3093
82-87
Torrengo, S.
ada3f92f-1862-4040-8d31-386ad58e91ed
Paul, M.C.
3249514a-97db-4712-b026-ca0b568c9366
Halder, A.
36e8b1c0-41b3-4a24-99e6-1583dbead306
Das, S.
69742cda-bca3-475d-85b1-e5f898b34365
Dhar, A.
b0904960-64c1-4092-b597-0c53839f59b7
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jain, S.
bf4af598-26bf-47f4-a0a4-800095a23eb5
Kir'yanov, A.V.
841fd76f-eba2-4c2f-9d19-6ba72ea8f946
d'Acapito, F.
27ccf185-47ec-4858-8742-cb5e8cc662f3
Torrengo, S.
ada3f92f-1862-4040-8d31-386ad58e91ed
Paul, M.C.
3249514a-97db-4712-b026-ca0b568c9366
Halder, A.
36e8b1c0-41b3-4a24-99e6-1583dbead306
Das, S.
69742cda-bca3-475d-85b1-e5f898b34365
Dhar, A.
b0904960-64c1-4092-b597-0c53839f59b7
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jain, S.
bf4af598-26bf-47f4-a0a4-800095a23eb5
Kir'yanov, A.V.
841fd76f-eba2-4c2f-9d19-6ba72ea8f946
d'Acapito, F.
27ccf185-47ec-4858-8742-cb5e8cc662f3

Torrengo, S., Paul, M.C., Halder, A., Das, S., Dhar, A., Sahu, J.K., Jain, S., Kir'yanov, A.V. and d'Acapito, F. (2015) EXAFS studies of the local structure of bismuth centers in multicomponent silica glass based optical fiber preforms. Journal of Non-Crystalline Solids, 410, 82-87. (doi:10.1016/j.jnoncrysol.2014.11.027).

Record type: Article

Abstract

An Extended X-ray Absorption Fine Structure (EXAFS) analysis of the local structure of bismuth in silicate-glass based optical fiber preforms exhibiting broadband near-infrared luminescence is presented. The valence state of the bismuth ions in alumino-silicate and yttria-alumino-silicate glass hosts is revealed to be Bi3+ and the local geometry is suggested to be a trigonal oxygen pyramid with the electron lone pair positioned opposite to the oxygen atom plane. Furthermore we found that the incorporation of Y2O3 into alumino-silicate glass host does not result in any change in the surrounding Bi structure.

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Accepted/In Press date: 29 November 2014
Published date: 15 February 2015
Keywords: bi-doped optical fiber preforms, exafs, bismuth
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 375784
URI: https://eprints.soton.ac.uk/id/eprint/375784
ISSN: 0022-3093
PURE UUID: 09fe6f73-56ae-4c7a-94d9-9f6578187a80

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Date deposited: 14 Apr 2015 11:59
Last modified: 19 Nov 2018 17:31

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Contributors

Author: S. Torrengo
Author: M.C. Paul
Author: A. Halder
Author: S. Das
Author: A. Dhar
Author: J.K. Sahu
Author: S. Jain
Author: A.V. Kir'yanov
Author: F. d'Acapito

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