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以固相反应法制备了致密的不同Ce含量的Ce:YAG陶瓷料棒,再用光学浮区法将这些Ce:YAG陶瓷料棒生长成Ce:YAG晶体。XRD结果表明,Ce:YAG陶瓷料棒主相为YAG相,同时存在部分YAP相;而光学浮区法生长的Ce:YAG晶体完全形成了YAG相,没有其他杂峰的出现,衍射峰尖锐,半峰宽窄,即光学浮区法生长的YAG晶体质量较高。Ce:YAG晶体的光学均匀性较好,在500-800nm区间,其平均透过率为90%-93%。Ce:YAG晶体的吸收光谱中心波长在456 nm具有较大的吸收系数。以波长为460 nm的单色光为光源激发Ce:YAG晶体测得其荧光光谱,其中,含1 at.%Ce的Ce:YAG晶体在黄绿光区域有较强的发光强度。
Ce: YAG ceramic rods with different Ce contents were prepared by solid-state reaction method, and then these Ce: YAG ceramic rod rods were grown into Ce: YAG crystals by optical float method. XRD results show that the main phase of Ce: YAG ceramic rod is YAG phase and some YAP phase exists at the same time. However, the YAG phase of Ce: YAG crystal grown by the optical floating zone method is completely formed without any other impurity peak, The width of the half-width, that is, the growth of optical floating-area YAG crystal higher quality. The optical uniformity of the Ce: YAG crystal is better, with an average transmittance of 90% -93% in the 500-800 nm range. The absorption spectrum center wavelength of Ce: YAG crystal has larger absorption coefficient at 456 nm. The fluorescence spectrum of Ce: YAG crystal was measured by monochromatic light with a wavelength of 460 nm. The Ce: YAG crystal containing 1 at.% Ce had a strong luminescence intensity in the yellow-green region.