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Optimization of Dy3+-doped Ge-Ga-As-S-CsBr glass composition and its 1.31 mu m emission properties SCIE SCOPUS

Title
Optimization of Dy3+-doped Ge-Ga-As-S-CsBr glass composition and its 1.31 mu m emission properties
Authors
Shin, YBYang, CKHeo, J
Date Issued
2002-03
Publisher
ELSEVIER SCIENCE BV
Abstract
An optimum glass composition for practical fiber fabrication was investigated for Ge-Ga-As-S-CsBr glasses. Dy3+ was doped into the glasses and its emission properties were examined. The best composition for practical use was 0.7[Ge0.25As0.1S0.65]-0.15GaS(3/2)-0.15CsBr. This glass also exhibited high resistance against the attack of liquid water. 0.7[Ge0.25As0.1S0.65]-0.15GaS(3/2) The lifetime and quantum efficiency of the 1.31 mum emission from Dy3+ increased approximately 17 and 4 times, respectively, compared to those obtained from other sulfide glasses. This is due to the formation of [GaS3/2Br](-) units. The frequency of the effective phonon which dominates the multiphonon relaxation process decreased from 375 to 245 cm(-1) with the addition of CsBr. (C) 2002 Elsevier Science B.V. All rights reserved.
Keywords
DOPED FIBER AMPLIFIER
URI
https://oasis.postech.ac.kr/handle/2014.oak/19135
DOI
10.1016/S0022-3093(02)00946-8
ISSN
0022-3093
Article Type
Article
Citation
JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 298, no. 2-3, page. 153 - 159, 2002-03
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허종HEO, JONG
Div. of Advanced Nuclear Enginrg
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