Synthesis and Luminescent Properties of Transparent Oxyfluoride Glass-Ceramics Containing Er3+:YLiF4 Nanocrystals

Transparent glass-ceramics containing YLiF4 nano-crystals were synthesized by controlled heat treatment of LiF–YF3–Al2O3–SiO2 glass. The crystallite size, estimated to be about 8 nm, was much less than the wavelength of visible light. From the fluorescent properties of the Er3+-doped precursor glass and the glass-ceramic, it was confirmed that Er3+ could be incorporated into YLiF4 nano-crystallites in the glass-ceramic. This transparent glass-ceramic containing YLiF4 nano-crystals is promising as a gain medium for rare earth-doped fiber lasers and amplifiers.

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