Abstract
Fluoride-based glasses are potential host materials for fiber lasers, amplifiers and solid state threedimensional (3D) displays. Fluorozirconate (ZrF4BaF2LaF3AlF3NaF), fluoride phosphate AlF3SrF2CaF2MgF2P2O5) and fluoroindate (InF3ZnF2BaF2GaF3PbF2REF3SrF2NaFCaF2) glasses were investigated in terms of their absorption and crystallization properties to compare their potential to be used as optical devices. Phonon sideband (PSB) measurements were employed to determine the local vibration behavior of the rare earth (RE) ions sites. A modified Judd-Ofelt treatment allows the description of transition probabilities between Pr3+ energy levels, including error estimates for the fitted parameters Ωt. In the investigated fluoroindate glasses melted in vitreous carbon crucibles using a reactive atmosphere, processing fanlike crystals composed of Sr and RE fluorides caused manufacturing problems.
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