材料期刊网

A large Ho3+:Li3Ba2La3(MoO4)8 crystal with high optical quality and well-developed appearance was grown by the flux method. The main spectral properties of the crystal, including the absorption spectra, fluorescence spectra and fluorescence decay curves were recorded at room temperature. The Judd-Ofelt (J-O) theory was applied to calculate the oscillator strength parameters?t (t=2, 4, 6), spontaneous emission probabilities, fluorescence branching ratios, and radiative lifetimes of Ho3+ ions undergoing transi-tions from ground state5I8 to the excited states. The stimulated emission cross-section for the5I7→5I8 transition was estimated to be 1.32×10–20 cm2 at 2045 nm by Fuchtbauer-Ladenburg (F-L) equation and the quantum efficiency of the5I7 level was calculated to be 89%.