title: High values of gain cross section and luminescence quantum efficiency in OH(-)-free Ti3+-doped low-silica calcium aluminosilicate glass.
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.
authors.affiliation: Grupo 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
authors.forename: S M
authors.initials: SM
authors.lastname: Lima
authors.forename: J R
authors.initials: JR
authors.lastname: Silva
authors.forename: L H C
authors.initials: LH
authors.lastname: Andrade
authors.forename: A
authors.initials: A
authors.lastname: Novatski
authors.forename: A N
authors.initials: AN
authors.lastname: Medina
authors.forename: A C
authors.initials: AC
authors.lastname: Bento
authors.forename: M L
authors.initials: ML
authors.lastname: Baesso
authors.forename: Y
authors.initials: Y
authors.lastname: Guyot
authors.forename: G
authors.initials: G
authors.lastname: Boulon