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

► Spectroscopy and photoluminescence of Tm3+:GM crystal are investigated. ► The spectroscopic parameters are calculated based on the J-O theory. ► The Tm3+:GM crystal has very good fluorescence properties in the blue and 1.9 μm region. ► Results are useful for exploiting phosphor of white LED and eye-safety high performance laser.