14 August 1998 Growth of Yb-doped fluorapatate crystal and study of its defects and spectroscopy performance
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Abstract
We have successfully grown Yb:FAP(fluorapatite) crystal doped with 1 - 5 at% Yb by CZ technique. Crystalline boules which are colorless and transparent have the size of 22 mm in diameter and 45 mm in length. The optimal growth parameters are presented. During a Yb:FAP crystal growth run there exists a continuous loss of fluoride through evaporation, so 5% excess of calcium fluoride was usually added. To eliminate the defects, a post-annealing method has been developed where the boule is suspended above the melt surface for two days in a temperature zone that is about 400 degrees Celsius below the melting point. The defects of crystals were discussed, and the spectroscopy performances of Yb:FAP crystal were reported.
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Peizhi Yang, Peizhi Yang, Peizhen Deng, Peizhen Deng, Jun Xu, Jun Xu, Yao Chai, Yao Chai, Wei Min Chen, Wei Min Chen, } "Growth of Yb-doped fluorapatate crystal and study of its defects and spectroscopy performance", Proc. SPIE 3556, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications II, (14 August 1998); doi: 10.1117/12.318250; https://doi.org/10.1117/12.318250
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