Spectroscopic characteristics and Judd-Ofelt analysis of Pr:GdScO3 crystal

The polarization absorption spectra of Pr3+-doped GdScO3 have been measured. Polarized emission spectra and fluorescence decay from the 3P0 upper level have been investigated. The strongest absorption peaks are located at 448 nm for a, b and c polarization, the absorption cross sections are 1.29 x 10-20 cm2, 0.98 x 10-20 cm2 and 1.57 x 10-20 cm2, respectively. The maximum emission cross section is located at 662 nm, which is 18.55 x 10-20 cm2 (a polarization), 12.74 x 10-20 cm2 (b polarization) and 22.41 x 10-20 cm2 (c polarization), and the FWHM is 10.02 nm, 9.38 nm and 10.14 nm, respectively. The fluorescence lifetime of 3P0 level is 12.39 mu s. Those results indicated that Pr3+-doped GdScO3 crystal grown by the Czochralski method is a potential laser medium for visible laser operation.