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Opt Lett. 2010 Apr 1;35(7):1055-7. doi: 10.1364/OL.35.001055.

High values of gain cross section and luminescence quantum efficiency in OH(-)-free Ti3+-doped low-silica calcium aluminosilicate glass.

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  • 1Grupo de Espectroscopia Optica e Fototérmica, Universidade Estadual de Mato Grosso do Sul-UEMS, C.P. 351, Dourados, Mato de Grosso do Sul, Brazil. smlima@uems.br

Abstract

We recently reported that Ti(3+)-doped low-silica calcium aluminosilicate glass presents long luminescence lifetime (170 micros) and broad emission band (190 nm) shifted toward the visible region when compared with those from Ti(3+):sapphire single crystal and Ti(3+)-doped glasses [Phys. Rev. Lett.100, 027402 (2008)]. Here we demonstrate that this glass also shows high values of both gain cross section (approximately 4.7 x 10(-19) cm(2)) and luminescence quantum efficiency (approximately 70%). By comparing these values with those for Ti(3+):sapphire crystal, we can conclude that the studied Ti(3+)-doped glass is a promising system for tunable solid-state lasers.

PMID:
20364215
[PubMed]
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