ErCa4O(BO3)3晶体的光谱分析
Spectral Properties of ErCa4O(BO3)3 Crystal
山东大学晶体材料国家重点实验室,山东济南,250100
摘要
采用Czochralski法生长了均匀透明的ErCa4O(BO3)3(简称ECOB)晶体,测量了其室温吸收谱,并与0.1 mol的ErCl3溶液的室温吸收谱进行了比较.根据Judd-Ofelt理论,拟合出唯像强度参数:Ω2=1.673×10-20 cm2,Ω4=1.356×10-20 cm2,Ω6=0.156×10-20 cm2.计算了各能级的辐射跃迁几率AJ,J′,振子强度fJ,J′,辐射寿命τ,荧光分支比βJ′等,并根据这些光学参量,讨论了该晶体的部分性能和应用前景.
Abstract
The transparent and homogeneous ErCa 4O(BO 3) 3 (ECOB) crystal is grown by Czochralski method. The room temperature absorption spectra have been measured and compared with that of 0.1 mol ErCl 3 solution. According to Judd-Ofelt theory, the spectral strength parameters: Ω 2=1.673×10 -20 cm 2, Ω 4=1.356×10 -20 cm 2, Ω 6=0.156×10 -20 cm 2 of Er 3+ ion have been fitted. The radiative transition probabilities A J,J′, oscillator strengths f J,J′, radiative lifetime τ and the branching ratio β J′ have been calculated. From these parameters, the properties and applications were discussed.
参考文献
[1] M. Iwai, T. Kobayashi, H. Furuya et al.. Crystal growth and optical characterization of rare-earth (Re) calcium oxyborate ReCa4O(BO3)3 (Re=Y or Gd) as new nonlinear optical materials [J]. Jpn. J. Appl. Phys., 1997, 36(Part 2, No.3A):L276～L279
[2] Zhang Siyuan, Bi Xianzhang. Spetral Theory of Rare Earth [M]. Changchun: Jilin Science and Technology Press, 1991 (in Chinese)
[3] Wu Guangzhao. Judd-Ofelt model and application [J]. Luminescence and Display (发光与显示), 1980, 4:31～ (in Chinese)
[4] A. A. Kaminskii. Laser Crystal [M]. Berlin, Heidelberg, Gemany: Springer-Verlag, 1981. 149
江怀东, 王继扬, 宋仁波, 胡小波, 刘宏, 滕冰, 张承乾. ErCa4O(BO3)3晶体的光谱分析[J]. 中国激光, 2002, 29(3): 227. 江怀东, 王继扬, 宋仁波, 胡小波, 刘宏, 滕冰, 张承乾. Spectral Properties of ErCa4O(BO3)3 Crystal[J]. Chinese Journal of Lasers, 2002, 29(3): 227.
PDF全文
