title: Influence of BaF2 and activator concentration on broadband near-infrared luminescence of Pr3+ ions in gallo-germanate glasses.
abstract: Thermal stability and broadband NIR luminescence of Pr(3+) doped gallo-germanate glasses with BaF2 have been studied. The thermal factors are larger for glass samples with low BaF2 content exhibiting good thermal stability against devitrification. Luminescence due to (1)D2 → (1)G4 transition of Pr(3+) was measured under 450 nm excitation. The (1)D2 measured lifetimes depend critically on activator concentration, but remain nearly unchanged with BaF2 content. The emission linewidth, the emission cross-section, the figure of merit (FOM) and the σem x FWHM product are relatively large, suggesting that Pr(3+)-doped gallo-germanate glasses with presence of BaF2 are promising as gain media for broadband near-infrared amplifiers.
authors.forename: Joanna
authors.initials: J
authors.lastname: Pisarska
authors.forename: Martyna
authors.initials: M
authors.lastname: Kowal
authors.forename: Marcin
authors.initials: M
authors.lastname: Kochanowicz
authors.forename: Jacek
authors.initials: J
authors.lastname: Zmojda
authors.forename: Jan
authors.initials: J
authors.lastname: Dorosz
authors.forename: Dominik
authors.initials: D
authors.lastname: Dorosz
authors.forename: Wojciech A
authors.initials: WA
authors.lastname: Pisarski