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无机材料学报

无机材料学报

• 研究论文 • 上一篇    

Tm3+掺杂YScO3激光晶体的生长、光谱和激光性能研究

苏骏扬1, 杨闯1, 刘坚1, 姜正元1, 张俊1, 刘龙鑫2, 潘忠奔3, 徐晓东1, 徐军2   

  1. 1.江苏师范大学 物理与电子工程学院, 徐州 221116;
    2.同济大学 物理科学与工程学院, 上海 200092;
    3.山东大学 信息科学与工程学院, 青岛 266237
  • 收稿日期:2026-03-11 修回日期:2026-04-07
  • 作者简介:苏骏扬(2002-),男,硕士研究生.E-mail:wuji@aaa.ccc
  • 基金资助:
    国家自然科学基金(62505118);江苏省基础研究计划(BK20230685)

Growth, Spectroscopy, and Laser Performance of Tm:YScO₃ Crystal

SU Junyang1, YANG Chuang1, LIU Jian1, JIANG Zhengyuan1, ZHANG Jun1, LIU Longxin2, PAN Zhongben3, XU Xiaodong1, XU Jun2   

  1. 1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;
    2. School of Physical Science and Engineering, Tongji University, Shanghai 200092, China;
    3. School of Information Science and Engineering, Shandong University, Qingdao, 266237, China
  • Received:2026-03-11 Revised:2026-04-07
  • About author:SU Junyang (2002-), male, PhD candidate. E-mail: wuji@aaa.ccc
  • Supported by:
    National Natural Science Foundation of China (62505118); Basic Research Program of Jiangsu Province (BK20230685)

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摘要： 2.1 μm波段的中红外激光晶体在人眼安全,遥感及医疗手术等领域应用较为广泛。本工作采用提拉法(Czochralski method)成功生长高质量的2.5% Tm:YScO3单晶(2.5%为原子百分数),测试了室温吸收、荧光光谱与荧光寿命,基于Judd-Ofelt理论计算关键光谱参数,并且测试了连续激光性能。结果表明：该晶体在794 nm处的吸收截面为0.33×10-20 cm2,半高宽为23.5 nm;Judd-Ofelt 强度参数Ω2、Ω4和 Ω6分别为2.55×10-20、0.80×10-20和 0.66×10-20 cm2。3F4能级辐射寿命为 6.52 ms。晶体在 1960 nm 处的发射截面达0.44×10-20 cm2,半高宽为86.63 nm,测试所得的荧光寿命为 3.855 ms。在 20 W 泵浦功率下,激光器最大输出功率为 2.78 W,斜效率为 22.66%,光束质量因子为Mx2 = 1.12、My2 = 1.09。较宽的发射带宽与较好的光束质量的结果表明,Tm:YScO3特别适用于可调谐及超快激光应用。综上所述,提拉法生长的2.5% Tm:YScO3晶体展现出卓越的光谱与激光性能,是新一代2.1 µm固态激光系统的极具潜力的候选材料。

关键词: 提拉法, Tm:YScO3, 晶体生长, 光谱性能, 激光性能

Abstract: Mid-infrared laser crystals operating in the 2.1 µm spectral region are widely utilized in eye-safe applications, remote sensing, and medical surgery. In this study, we successfully grew high-quality 2.5% Tm:YScO3 single crystals (2.5% is in atomic) using the Czochralski method. We systematically characterized their room-temperature absorption and fluorescence spectra, measured fluorescence lifetimes, calculated key spectroscopic parameters based on Judd-Ofelt theory, and evaluated their continuous-wave (CW) laser performance. The results indicate that the crystal exhibits an absorption cross-section of 0.33×10-20 cm2 at 794 nm with a full width at half maximum (FWHM) of 23.5 nm. The Judd-Ofelt intensity parameters Ω2, Ω4, and Ω6 were determined to be 2.55×10-20, 0.80×10-20, and 0.66×10-20 cm2, respectively, yielding a calculated radiative lifetime of 6.52 ms for the 3F4 level. Furthermore, the emission cross-section at 1960 nm was found to be 0.44×10-20 cm2 with a broad FWHM of 86.63 nm, while the measured fluorescence lifetime was 3.855 ms. Under an incident pump power of 20 W, the laser achieved a maximum output power of 2.78 W with a slope efficiency of 22.66% and excellent beam quality factors of Mx2=1.12 and My2=1.09. The combination of a broad emission bandwidth and superior beam quality suggests that Tm:YScO3 is particularly well-suited for tunable and ultrafast laser applications. In conclusion, the 2.5% Tm:YScO3 crystal grown by the Czochralski method demonstrates exceptional spectroscopic and lasing properties, establishing it as a highly promising candidate for next-generation 2.1 µm solid-state laser systems.

Key words: Czochralski method, Tm:YScO3, crystal growth, spectroscopic properties, laser performance

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