Growth, nonlinear frequency-doubling and spectral properties of Nd:Ca8.53K1.09La0.95(VO4)7 crystal

被引：23
作者：
Hu, Xiaolin [1 ]
Chen, Xin [1 ]
Zhuang, Naifeng [1 ]
Wang, Rongfeng [1 ]
Chen, Jianzhong [1 ]
机构：
[1] Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350002, Peoples R China
来源：
JOURNAL OF CRYSTAL GROWTH | 2008年 / 310卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Characterization; Czochralski method; Vanadates; Nonlinear optic materials;
D O I：
10.1016/j.jcrysgro.2008.09.059
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The 18.7 at% Nd:Ca8.53K1.09La0.95(VO4)(7) crystal with dimensions up to empty set 22 mm x 30 mm was grown by the Czochralski method. The X-ray powder diffraction pattern of Nd:Ca8.53K1.09La0.95(VO4)(7) crystal confirms that the as-grown crystal is isostructural with pure Ca9La(VO4)(7) crystal. The effective segregation coefficients of Nd3+ and K+ ions in the crystal were measured to be about 1.21 and 0.73, respectively. The hardness of Nd:Ca8.53K1.09La0.95(VO4)(7) crystal is about 358.3 VDH. The qualitative frequency-doubling experiment shows that the doping of K+ ion can help reduce the scattering of frequency-doubling light. The spectroscopic study of Nd3+ in Nd:Ca8.53K1.09La0.95(VO4)(7) crystal was performed, and the polarized absorption and fluorescence spectra were analyzed based on Judd-Ofelt theory, which exhibits that the pi-polarized absorption and stimulated emission cross sections are 4.41 x 10(-20) cm(2) with an FWHM 11 nm at 810nm and 1.61 x 10(-19) cm(2) at 1066 nm, respectively. The fluorescence lifetime is 128 mu s at room temperature. All the results indicate that the Nd:Ca8.53K1.09La0.95(VO4)(7) crystal may be a highly efficient laser material and thus a promising candidate of self-frequency-doubling laser material. (C) 2008 Elsevier B.V. All rights reserved.
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页码：5423 / 5427
页数：5
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