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Spectroscopy of titanium-doped gallium lanthanum sulfide glass

Spectroscopy of titanium-doped gallium lanthanum sulfide glass
Spectroscopy of titanium-doped gallium lanthanum sulfide glass
Titanium-doped gallium lanthanum sulfide (Ti:GLS) and gallium lanthanum oxysulfide (Ti:GLSO) glasses have an absorption band at ~500-600 nm that cannot be fully resolved because of its proximity to the band edge of the glass. At concentrations >0.5% a shoulder at 980 nm is observed in Ti:GLS but not in Ti:GLSO. The emission spectra of Ti:GLS and Ti:GLSO both peak at 900 nm with lifetimes of 67 and 97 µs, respectively. We propose that the absorption at 600 nm is due to the 2T2g to 2Eg transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+-Ti4+ pairs.
0740-3224
1458-1465
Hughes, Mark A.
2306bfa8-7474-43ee-bf89-01bb035889bb
Curry, Richard J.
409b626f-f0b9-4b5e-a12c-6f8b87d20ee0
Hewak, Daniel W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Hughes, Mark A.
2306bfa8-7474-43ee-bf89-01bb035889bb
Curry, Richard J.
409b626f-f0b9-4b5e-a12c-6f8b87d20ee0
Hewak, Daniel W.
87c80070-c101-4f7a-914f-4cc3131e3db0

Hughes, Mark A., Curry, Richard J. and Hewak, Daniel W. (2008) Spectroscopy of titanium-doped gallium lanthanum sulfide glass. Journal of the Optical Society of America B, 25 (9), 1458-1465. (doi:10.1364/JOSAB.25.001458).

Record type: Article

Abstract

Titanium-doped gallium lanthanum sulfide (Ti:GLS) and gallium lanthanum oxysulfide (Ti:GLSO) glasses have an absorption band at ~500-600 nm that cannot be fully resolved because of its proximity to the band edge of the glass. At concentrations >0.5% a shoulder at 980 nm is observed in Ti:GLS but not in Ti:GLSO. The emission spectra of Ti:GLS and Ti:GLSO both peak at 900 nm with lifetimes of 67 and 97 µs, respectively. We propose that the absorption at 600 nm is due to the 2T2g to 2Eg transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+-Ti4+ pairs.

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Published date: 1 September 2008

Identifiers

Local EPrints ID: 162723
URI: http://eprints.soton.ac.uk/id/eprint/162723
ISSN: 0740-3224
PURE UUID: a0e7cf95-2cb4-4536-b41f-43e9f3131ea8
ORCID for Daniel W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

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Date deposited: 26 Aug 2010 10:39
Last modified: 20 Apr 2021 01:35

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