Spectroscopy of titanium-doped gallium lanthanum sulfide glass

Mark A. Hughes; Richard J. Curry; Daniel W. Hewak

doi:10.1364/JOSAB.25.001458

Spectroscopy of titanium-doped gallium lanthanum sulfide glass

Mark A. Hughes, Richard J. Curry, Daniel W. Hewak

Research output: Contribution to journal › Article › peer-review

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 ²T_2g → ²E_g transition of octahedral Ti³⁺ and the 980 nm shoulder is due to Ti³⁺-Ti⁴⁺ pairs.

Original language	English
Pages (from-to)	1458-1465
Number of pages	8
Journal	Optical Society of America. Journal B: Optical Physics
Volume	25
Issue number	9
DOIs	https://doi.org/10.1364/JOSAB.25.001458
Publication status	Published - Sept 2008

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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 → 2Eg transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+-Ti4+ pairs.",

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AU - Curry, Richard J.

AU - Hewak, Daniel W.

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N2 - 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 → 2Eg transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+-Ti4+ pairs.

AB - 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 → 2Eg transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+-Ti4+ pairs.

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Spectroscopy of titanium-doped gallium lanthanum sulfide glass

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