Crystal growth, polarization spectral analysis derived from the broadband emission from the D-1(2) level of Pr:GdScO3 crystal

Pr3+-doped GdScO3 single crystal was successfully grown by the Czochralski (Cz) method. Polarized absorption spectra, polarized fluorescence spectra, and fluorescence decay curves were measured at room temperature. The polarized spectroscopic property of Pr:GdScO3 crystal for new-wavelength transition in the near infrared (NIR) region was discussed for the first time. The absorption cross-sections at 600nm were calculated to be 0.39x10(-20) cm(2) (E parallel to a), 0.32x10(-20) cm(-2) (E parallel to b) and 0.4x10(-20) cm(2) (E parallel to c). The emission cross sections at 1053 nm of D-1(2) energy level were calculated to be 0.86x10(-20) cm(-2) (E parallel to a), 0.79x10(-20) cm(2) (E parallel to b) and 0.78/10(-20) cm(2) (E parallel to c), with FWHM of 57.54 nm, 57.96 nm and 58.96 nm, respectively. The fluorescence lifetime and radiative lifetime of the D-1(2) energy levels of Pr3+ ions were 45.46 mu s and 393.94 mu s, respectively. Those results show that the Pr:GdScO3 crystal should be the potential near infrared laser gain medium originated from the D-1(2) transition. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement