MIR spectroscopy of Tb3+-doped low-phonon crystals and polycrystalline fibers

Abstract

Spectroscopic investigations of Tb doped KPb2Cl5 and CsCdBr3 crystals and AgBr1-xIx polycrystalline fibers were carried out. Luminescence in 4.3-5.5 micrometers region was found in the KPb2Cl5:Tb3+ and CsCdBr3:Tb3+ crystals at room temperature. The AgBr1-xIx:Tb3+ polycrystalline fiber is expected to have luminescence in 3- 10 μm region. Gain properties of the crystals are evaluated.