Ho^(3+)∶La_2CaB_(10)O_(19)晶体生长和光谱性能(英文)  

Growth and Spectral Properties of Ho^(3+)∶La_2CaB_(10)O_(19) Crystals

作　　者：祖延雷[1,2] 张建秀[1] 傅佩珍[1] 吴以成[1] 

机构地区：[1]中国科学院理化技术研究所北京人工晶体研究发展中心,中国科学院功能晶体与激光技术重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《人工晶体学报》2010年第5期1099-1103,共5页Journal of Synthetic Crystals

基　　金：Project supported by the National Natural Science Foundation of China(No.50590402)

摘　　要：采用顶部籽晶法生长Ho3+∶La2CaB10O19晶体。测试了晶体的X射线衍射谱图以及晶体器件的摇摆曲线,半峰宽为21.6 arcsec,晶体结晶质量良好。在室温下测试了吸收光谱、发射光谱和荧光寿命。应用Judd-Ofelt理论评价了Ho3+∶La2CaB10O19晶体的光谱性能。分别计算了Ho3+的唯象强度、谱线强度、辐射寿命、荧光分支比等参数。Ho^3＋ doped La2CaB10O19 crystals have been grown by top-seeded solution growth（TSSG） method.The structure of the crystal was studied by X-ray powder diffraction（XRPD）.The rocking curve measurement showed that the FWHM is 21.6 arcsec,indicating a high crystalline perfection.The absorption and fluorescence spectra were measured at room temperature.The Judd-Ofelt theory was applied to the evaluation of its spectral properties.The J-O parameters（Ωt,t=2,4,6）,the radiative transition probabilities AJ,J＇,radiative lifetime τ,fluorescence branch ratios βJand the value of integrated emission cross section were also been calculated.

关 键 词：Ho^3+∶La2CaB10O19晶体 晶体生长 光谱性能 顶部籽晶法 

分 类 号：O78[理学—晶体学]