Abstract
Abstract The Cr 3+:BeAl 2O 4 crystal, Cr 3:LiNbO 3 crystal, and ZnO-Al 2O 3-SiO 2 glass-ceramic were obtained by the Czochralski technique, Bridgman method, and melting processing, respectively. The optical absorption and emission spectra of the above Cr 3-incorporated solid-state materials were recorded. The technical parameters for growing high-quality Cr 3+:BeAl 2O 4 and Cr 3+:LINbO 3 crystals were obtained. The results indicate that the optical absorption and fluorescence spectra of Cr 3+ show quite a few differences in various matrixes. The sharp line emissions were observed in the Cr 3+:BeAl 2O 4 and Cr 3+:LiNbO 3 crystals. The crystal-field parameters ( D q) for Cr 3+ in different matrixes were calculated from their corresponding spectra. It is indicated that Cr 3+:BeAl 2O 4 and Cr 3+:LiNbO 3 belong to the high-field site crystal, while the Cr 3+:ZnO-Al 2O 3-SiO 2 glass and glass-ceramic belong to the weak-field site crystal.
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