Optimization of Preparation and Spectral Performance of Yb~(3+)-Doped Locally Disordered Li2Gd4(MoO4)7 Crystal for Tunable and Femtosecond Laser Applications

摘要

Through the improvements of the crystal growth conditions and environments, a crack-free 5.65 at. % Yb~(3+):Li2Gd4(MoO4)7 crystal has been successfully grown by the Czochralski method. The detailed XRD pattern of Li2Gd4(MoO4)7 has been presented for the first time, Optical absorption, emission and fluorescence decay measurements have been carried out at room temperature. The spectroscopic parameters of the 5.65 at. % Yb~(3+):Li2Gd4(MoO4)7 crystal are compared with those of the 3.2 at. % one reported previously. The results indicate that the crystal with high doping level is a more promising laser gain medium for tunable and femosecond laser systems.