Spectroscopy and photoluminescence of Tm3+:β′-Gd2(MoO4)3 crystal

The polarized absorption and photoluminescence were investigated in a Tm3+-doped β′-Gd2(MoO4)3 single crystal. The spectroscopic parameters were calculated based on the Judd–Ofelt theory. Fluorescence emissions and decay curves were measured under different excitations. Results have indicated that the Tm3+:β′-Gd2(MoO4)3 crystal has good application prospects both in blue phosphor for white LED and in eye-safety lasing around 1.9 μm.