Spectroscopic properties of Pr3+:SrMoO4 crystal

A Pr3+-doped SrMoO4 single crystal has been grown successfully by the Czochralski technique. The absorption spectra, fluorescence spectra, and fluorescence decay curves have been measured at room temperature. The spectroscopic parameters, including spectroscopic parameters Ωt (t = 2,4,6), radiative transition probabilities, radiative lifetimes and branching ratios were determined according to the standard and modified Judd–Ofelt theories. The stimulated emission cross-sections, the fluorescence lifetimes and the quantum efficiency of Pr3+ ions in SrMoO4 were obtained. This study implies that Pr3+:SrMoO4 is an attractive candidate for solid-state laser medium.

Research highlightsIn our work, Pr3+-doped SrMoO4 crystal of high quality has been grown successfully by the Czochralski technique along the c-axis. According to the modified Judd–Ofelt theories, we obtained the accurate spectroscopic parameters with low errors (rmΔS = 0.071) between experimental and calculated data. The fluorescence lifetime and the quantum efficiency of the 1D2 → 3F4 transition were calculated to be 92.88 μs and 93.39%, respectively, which are larger than other laser crystals.