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Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preform

Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preform
Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preform
Yb2O3-doped yttrium aluminium garnet (YAG) nano-crystals within the silicate glass-based optical fiber preforms were obtained through the conventional-modified chemical vapour deposition (MCVD) and solution doping technique. Nano-crystals were developed with soaking of the porous phospho-silica or pure silica core layer in a solution containing the ytterbium, yttrium and other co-dopants, including fluorine using 10-15% fluorosilicic acid, and through post-annealing of the preform at a temperature of around 1450 °C. The size, shape and nature of Yb2O3-doped phase-separated nano-crystallites were evaluated from HRTEM images along with the electron diffraction pattern based on the doping levels of phosphorous and fluorine. The size of nano-crystallites was maintained within 6-10 nm when doped with 0.25 mole% of fluorine. X-ray analyses EDX data reveals that the nano-particles are rich in Yb:YAG, and uniformly dispersed into the amorphous silica glass matrix. The novelty of this technique involves the direct synthesis of rare-earth doped phase-separated nano-crystallites within the core region of silica glass preforms. This class of fibers containing the nano-particles with or without Yb:YAG crystalline nature will keep the advantage of the mechanical properties as well as good lasing properties under high power application compared to the Yb:YAG ceramic laser.
fiber optics, solution doping technique, porous soot layer, annealing, nano-crystalline materials, high-resolution transmission electron microscopy
0921-5107
108-119
Paul, M.C.
3249514a-97db-4712-b026-ca0b568c9366
Bysakh, S.
ed485ae6-5f2d-4e97-b7d4-77d0e9fc055b
Das, S.
69742cda-bca3-475d-85b1-e5f898b34365
Bhadra, S.K.
a0070bd2-1ff1-4719-8d39-5075062e8b3d
Pal, M.
f93f43f4-cac8-48ac-a71b-f1f0fc58167c
Yoo, S.
4714ed34-2088-4d00-a4bb-9d153384c36e
Kalita, M.P.
f673f26f-bdcd-409d-baae-aa86cf4ca6ad
Boyland, A.J.
e6e842e6-0fe6-4de2-a9b8-ca44f30ab4d5
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Paul, M.C.
3249514a-97db-4712-b026-ca0b568c9366
Bysakh, S.
ed485ae6-5f2d-4e97-b7d4-77d0e9fc055b
Das, S.
69742cda-bca3-475d-85b1-e5f898b34365
Bhadra, S.K.
a0070bd2-1ff1-4719-8d39-5075062e8b3d
Pal, M.
f93f43f4-cac8-48ac-a71b-f1f0fc58167c
Yoo, S.
4714ed34-2088-4d00-a4bb-9d153384c36e
Kalita, M.P.
f673f26f-bdcd-409d-baae-aa86cf4ca6ad
Boyland, A.J.
e6e842e6-0fe6-4de2-a9b8-ca44f30ab4d5
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2

Paul, M.C., Bysakh, S., Das, S., Bhadra, S.K., Pal, M., Yoo, S., Kalita, M.P., Boyland, A.J. and Sahu, J.K. (2010) Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preform. Materials Science and Engineering: B, 175 (2), 108-119. (doi:10.1016/j.mseb.2010.07.013).

Record type: Article

Abstract

Yb2O3-doped yttrium aluminium garnet (YAG) nano-crystals within the silicate glass-based optical fiber preforms were obtained through the conventional-modified chemical vapour deposition (MCVD) and solution doping technique. Nano-crystals were developed with soaking of the porous phospho-silica or pure silica core layer in a solution containing the ytterbium, yttrium and other co-dopants, including fluorine using 10-15% fluorosilicic acid, and through post-annealing of the preform at a temperature of around 1450 °C. The size, shape and nature of Yb2O3-doped phase-separated nano-crystallites were evaluated from HRTEM images along with the electron diffraction pattern based on the doping levels of phosphorous and fluorine. The size of nano-crystallites was maintained within 6-10 nm when doped with 0.25 mole% of fluorine. X-ray analyses EDX data reveals that the nano-particles are rich in Yb:YAG, and uniformly dispersed into the amorphous silica glass matrix. The novelty of this technique involves the direct synthesis of rare-earth doped phase-separated nano-crystallites within the core region of silica glass preforms. This class of fibers containing the nano-particles with or without Yb:YAG crystalline nature will keep the advantage of the mechanical properties as well as good lasing properties under high power application compared to the Yb:YAG ceramic laser.

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More information

Published date: 25 November 2010
Keywords: fiber optics, solution doping technique, porous soot layer, annealing, nano-crystalline materials, high-resolution transmission electron microscopy

Identifiers

Local EPrints ID: 187259
URI: https://eprints.soton.ac.uk/id/eprint/187259
ISSN: 0921-5107
PURE UUID: cb8f953a-81eb-406a-9f23-34618af85a8b

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Date deposited: 16 May 2011 14:36
Last modified: 24 Jul 2019 16:31

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