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Spectroscopy of titanium-doped gallium lanthanum sulfide glass

Hughes, MA, Curry, RJ and Hewak, DW 2008, 'Spectroscopy of titanium-doped gallium lanthanum sulfide glass' , Journal of the Optical Society of America B, 25 (9) , pp. 1458-1465.

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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 T2g 2 →Eg 2 transition of octahedral Ti3+ and the 980 nm shoulder is due to Ti3+–Ti4+ pairs.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Journal of the Optical Society of America B
Publisher: Opitcal Society of America
ISSN: 0740-3224
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: Dr Mark Hughes
Date Deposited: 11 Nov 2015 09:21
Last Modified: 05 Apr 2016 19:37

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