Crystal growth, nonlinear frequency-doubling and spectral characteristic of Nd:Ca9La(VO4)7 crystal
Crystal growth, nonlinear frequency-doubling and spectral characteristic of Nd:Ca9La(VO4)7 crystal
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Nd:Ca9La(VO4)7晶体的晶体生长、非线性倍频及光谱特性
DOI：
10.1016/j.jallcom.2014.01.144
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发表时间：
2014-05
影响因子：
6.2
通讯作者：
Jianzhong Chen
中科院分区：
文献类型：
--
作者：
Naifeng Zhuang;Xiaofeng Liu;Qianrui Xu;Xin Chen;Bin Zhao;Xiaolin Hu;Jianzhong Chen
用提拉法生长了纯Ca9La(VO4)7和不同Nd3+掺杂浓度的Nd：Ca9La(VO4)7晶体。测得Nd3+离子在Ca9La(VO4)7晶体中的有效分凝系数为1.07，有利于Nd3+离子的均匀分布。倍频实验和晶体结构分析表明，La3+离子的存在可以改善Ca9La(VO4)7晶体的倍频效应。用Kurtz粉末法测得的倍频效应强度约为KH_2PO_4(KDP)晶体的4倍。根据贾德-欧菲尔理论对晶体的偏振吸收光谱和偏振荧光光谱进行了分析，结果表明：该晶体有望产生波长为921、1069和1349 nm的激光。根据迁移模型分析了Nd3+离子在Ca9La(VO4)7晶体中的发光衰减动力学，结果表明，在3.2at.%的Nd3+：Ca9La(VO4)7晶体中，Nd3+离子具有较高的量子效率，约为98.2%，且有微弱的浓度猝灭效应。因此，Nd：Ca9La(VO4)7晶体可能是一种高效的激光材料和自倍频(SFD)激光晶体的候选材料。
The pure Ca9La(VO4)7and the Nd:Ca9La(VO4)7crystals with various Nd3+-doped concentrations were grown by Czochraski method. The effective segregation coefficient of Nd3+ion in Ca9La(VO4)7crystal was measured as 1.07, which is favorable to the even distribution of Nd3+ions. The frequency-doubling experiment and the crystal structure analyses show that the presence of La3+ion in crystal can improve the SHG effect of Ca9La(VO4)7crystal. The intensity of SHG effect, measured by the Kurtz powder method, is found to be about 4 times as large as that of KH2PO4(KDP) crystal. The polarized absorption spectra and the polarized fluorescence spectra are analyzed based on Judd–Ofelt theory, which show that the Nd:Ca9La(VO4)7crystal is hopeful to generate laser light at the wavelengths of about 921, 1069 and 1349 nm. The luminescence decay kinetics are analyzed based on the migration model, and the results indicate that Nd3+ion in Ca9La(VO4)7crystal has a high quantum efficiency, about 98.2% in 3.2 at.% Nd:Ca9La(VO4)7crystal, and a weak concentration quenching effect. Therefore, Nd:Ca9La(VO4)7crystal may be a high efficiency laser material and a candidate of self-frequency-doubling (SFD) laser crystal.
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影响因子：
0.8
作者：
A. Glass;S. Abrahams;A. Ballman;G. Loiacono
通讯作者：
A. Glass;S. Abrahams;A. Ballman;G. Loiacono
影响因子：
5.4
作者：
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通讯作者：
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影响因子：
1
作者：
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通讯作者：
Chen Chuang-tian
影响因子：
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作者：
John S. O. Evans;Jinfan Huang;A. Sleight
通讯作者：
John S. O. Evans;Jinfan Huang;A. Sleight
影响因子：
6.2
作者：
Shijia Sun;Zhoubin Lin;Lizhen Zhang;Yisheng Huang;Guo‐fu Wang
通讯作者：
Shijia Sun;Zhoubin Lin;Lizhen Zhang;Yisheng Huang;Guo‐fu Wang