| Crystal growth,spectral properties and Judd–Ofelt analysis of Pr: CaF_2-YF_3 |
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| 作者单位： | 1.School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China;2.Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 61805177, 61861136007, and 61621001). |
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| 摘 要： | 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 σem ·τ of ~3P_0→~3H_6 and ~3P_0→~3F_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_2F_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.
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| 收稿时间： | 2020-12-29 |
Crystal growth,spectral properties and Judd-Ofelt analysis of Pr: CaF2-YF3 |
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| Affiliation: | 1.School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China;2.Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China |
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| Abstract: | The 0.6 at.% Pr3+-doped CaF2-YF3 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: CaF2-YF3 crystal was 45.46 μs, and the σem·τ of 3P0→3H6 and 3P0→3F2 transitions were calculated to be 80.92×10-20 cm2·μs and 388.7×10-20 cm2·μs, respectively. The FWHMs are 20.1 nm and 6.8 nm, which are higher than those of Pr: LiYF4, Pr: LiLuF4, Pr: LiGdF4 and Pr: BaY2F8 crystals. The results show that the Pr: CaF2-YF3 crystal is expected to achieve 605 nm orange light and 642 nm red light laser operation. |
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| Keywords: | CaF2-YF3 crystal growth spectral property Judd-Ofelt theory |
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