掺镨钒酸钆晶体的研究

Pr:GdVO4 crystals were grown by using Czochraliski pulling method for the first time to our knowledge. The structures of the crystals we have grown were studied by XRD method, and the results confirmed that their structures were the same with the pure GdVO4 crystal. Crystals’ absorption spectrum had been measured from 400nm to 3000nm at room temperature, and we find that the strength of each absorption peak is much stronger in σ-absorption-spectrum, so we had better do laser experiments while incident ray and the direction of electric complexor plumb with ray axis. The fluorescence emitting excited by 532nm laser was recorded separately. We find that there is a width and powerful fluorescence-emission band in visual field(604nm, 616nm), corresponding with 1D2→3H4. Comparing fluorescence spectrums of different doping-content crystals, the fluorescence intensity appeared as follows: 0.5％＞0.7％＞0.32％, so we know 0.5mol％is the best doping content of Pr3+ ions in GdVO4 crystal.