Comparison of fluorescence spectra of Yb:Y_3Al_5O_(12) and Yb:YAlO_3 single crystals

摘要

Yb:Y_3Al_5O_(12) (Yb:YAG) single crystals with Yb doping concentration 0.5 at.%, 5 at.%, 15at.%, 25 at.%, 50at.%, 100at.% and Yb:YAlO_3 (Yb:YAP) single crystals with Yb doping concentration 0.5 at.%, 5 at.%, 15 at.%, 30 at.% were grown by the Czochralski process. The fluorescence spectra of these crystals and the effects of self-absorption on the shape of the fluorescence spectra were studied. Through comparing the fluorescence spectra of Yb:YAG and Yb: YAP, all results indicate that the effects of self-absorption on the fluorescence spectra of Yb:YAP are remarkably stronger than that of Yb:YAG at the same Yb concentration.