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.%, 15 at.%, 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.