Spectroscopy of titanium-doped gallium
lanthanum sulfide glass

Hughes, MA; Curry, RJ; Hewak, DW

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 T2g
2


→Eg
2


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

Citation

lanthanum sulfide glass. Journal of the Optical Society of America B, 25(9), 1458-1465. https://doi.org/10.1364/JOSAB.25.001458

• Journal Article Type: Article
• Acceptance Date: Jul 3, 2008
• Publication Date: Aug 15, 2008
• Deposit Date: Nov 11, 2015
• Journal: Journal of the Optical Society of America B
• Print ISSN: 0740-3224
• Electronic ISSN: 1520-8540
• Publisher: Optical Society of America
• Volume: 25
• Issue: 9
• Pages: 1458-1465
• DOI: https://doi.org/10.1364/JOSAB.25.001458
• Publisher URL: http://dx.doi.org/10.1364/JOSAB.25.001458
• Related Public URLs: https://www.osapublishing.org/josab/home.cfm
• Additional Information: Funders : Engineering and Physical Sciences Research Council (EPSRC)