Crystal growth, spectral properties and Judd-Ofelt analysis of Pr: CaF2-YF3
Crystal growth, spectral properties and Judd-Ofelt analysis of Pr: CaF2-YF3
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Pr: CaF2-YF3 的晶体生长、光谱特性和 Judd-Ofelt 分析
DOI：
10.1088/1674-1056/abf921
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发表时间：
2021
影响因子：
1.7
通讯作者：
Xu Jun
中科院分区：
文献类型：
--
作者：
Tian Jie;Cao Xiao;Wang Wudi;Liu Jian;Dong Jianshu;Hu Donghua;Wang Qingguo;Xue Yanyan;Xu Xiaodong;Xu Jun
采用温度梯度技术(TGT)成功生长了0.6 at.% Pr 3+ 掺杂的CaF 2-YF 3 晶体。 X射线衍射分析表明生长的晶体仍具有立方结构。讨论了吸收光谱、发射光谱、Judd-Ofelt 分析和室温荧光衰减曲线。 Pr: CaF 2-YF 3 晶体的荧光寿命为45.46 μs，计算出3 P 0→ 3 H 6 和3 P 0→ 3 F 2 跃迁的σ em⋅ τ 分别为80.92× 10− 20 cm 2⋅ μs 和388.7× 10− 20 cm 2⋅ μs 。半峰宽分别为20.1 nm和6.8 nm，高于Pr: LiYF 4 、Pr: LiLuF 4 、Pr: LiGdF 4 和Pr: BaY 2 F 8 晶体的半峰宽。结果表明，Pr:CaF 2-YF 3 晶体有望实现605 nm橙光和642 nm红光激光操作。
The 0.6 at.% Pr 3+-doped CaF 2-YF 3 crystal was successfully grown by the temperature gradient technique (TGT). X-ray diffraction analysis showed that the grown crystal still had cubic structure. The absorption spectrum, emission spectrum, Judd–Ofelt analysis and fluorescence decay curve at room temperature were discussed. The fluorescence lifetime of Pr: CaF 2-YF 3 crystal was 45.46 μs, and the σ em⋅ τ of 3 P 0→ 3 H 6 and 3 P 0→ 3 F 2 transitions were calculated to be 80.92× 10− 20 cm 2⋅ μs and 388.7× 10− 20 cm 2⋅ μs, respectively. The FWHMs are 20.1 nm and 6.8 nm, which are higher than those of Pr: LiYF 4, Pr: LiLuF 4, Pr: LiGdF 4 and Pr: BaY 2 F 8 crystals. The results show that the Pr: CaF 2-YF 3 crystal is expected to achieve 605 nm orange light and 642 nm red light laser operation.