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2μm波段激光在医疗、环境监测、激光雷达、遥感探测、测距领域具有十分广阔的应用,近年来成为中红外光源研究的热点。Tm,Ho:YAlO3晶体具有较好的机械和热性能,能实现多种2μm波段激光连续及脉冲输出。对国内外2μm波段Tm,Ho:YAlO3激光器的研究进展进行了归纳与总结,包括Tm/Ho单掺YAlO3激光连续及脉冲振荡技术手段,Tm,Ho:YAlO3激光连续及脉冲振荡技术手段,高功率Tm,Ho:YAlO3激光器研究的最新进展等。技术手段涉及主动调Q、被动调Q、Tm激光抽运Ho激光等,并对Tm,Ho:YAlO3激光器的进一步发展及应用给予了展望。
In the field of medical treatment, environmental monitoring, laser radar, remote sensing and ranging, the 2μm laser has a very wide range of applications. In recent years, it has become a hot spot in the research of mid-infrared light sources. Tm, Ho: YAlO3 crystal has good mechanical and thermal properties, enabling a variety of 2μm band laser continuous and pulse output. The research progress of Tm and Ho: YAlO3 lasers in the 2μm band at home and abroad are summarized and summarized, including Tm / Ho singly doped YAlO3 laser continuous and pulsed oscillation techniques, Tm, Ho: YAlO3 laser continuous and pulsed oscillation techniques, high power Tm, Ho: YAlO3 laser research progress and so on. The technical measures involve active Q-switching, passive Q-switching and Tm laser pumping of Ho laser, etc. The prospect of further development and application of Tm, Ho: YAlO3 laser is also discussed.