Abstract
Titanium-doped gallium lanthanum sulfide (Ti:GLS) and gallium lanthanum oxysulfide (Ti:GLSO) glasses have an absorption band at that cannot be fully resolved because of its proximity to the band edge of the glass. At concentrations a shoulder at is observed in Ti:GLS but not in Ti:GLSO. The emission spectra of Ti:GLS and Ti:GLSO both peak at with lifetimes of 67 and , respectively. We propose that the absorption at is due to the transition of octahedral and the shoulder is due to pairs.
© 2008 Optical Society of America
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