电光调Q脉冲Ho:YLF激光器实验研究  

Experimental research on electro-optical Q-switched pulse Ho:YLF laser

作　　者：赵莉莉 田俊涛 李志永 王海 Zhao Lili;Tian Juntao;Li Zhiyong;Wang Hai(Laser Engineering Technology Research Center,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;College of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院空天信息创新研究院,激光工程技术研究中心,北京100094 [2]中国科学院大学电子电气与通信工程学院,北京100049

出　　处：《强激光与粒子束》2023年第3期29-32,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61875198,61775215);脉冲功率激光技术国家重点实验室开放基金项目(SKL2021KF04);中国科学院仪器设备研制项目(YJKYYQ20210045)。

摘　　要：2μm低重复频率高峰值功率高光束质量激光在中长波光参量非线性频率变换等领域具有较为广阔的应用前景。采用L型谐振腔结构,使用42 W的掺Tm光纤激光器泵浦Ho:YLF晶体。基于磷酸钛氧铷(RTP)电光调Q技术,实现了重复频率50 Hz、脉冲宽度18 ns、脉冲能量13.5 mJ、峰值功率0.75 MW的2.05μm Ho:YLF固体激光输出。光束的水平方向和竖直方向M2因子分别为1.4和1.1。该Ho:YLF固体激光器采用光纤激光器泵浦,具有结构紧凑的特点,为更高能量的Ho激光输出奠定了基础。The 2μm laser with low repetition rate,high peak power and high beam quality has a wide application prospect for nonlinear frequency transformation of mid-infrared and long-infrared optical parameters.The Ho:YLF crystal is pumped by a 42W Tm doped fiber laser with an L-shaped resonator structure.Laser output with wavelength of 2.05μm,repetition rate of 50 Hz,pulse width of 18 ns,pulse energy of 13.5 mJ,and peak power of0.75 MW is realized based on the electro-optic Q-switching technology of rubidium titanate phosphate(RTP).And the beam quality M2 factors in the horizontal and vertical directions are 1.4 and 1.1,respectively.The Ho:YLF solid state laser is pumped by a fiber laser and has a compact structure,and it will build the foundation for Ho laser with higher pulse energy.

关 键 词：Tm光纤激光器 Ho:YLF 电光调Q 高峰值功率 低重复频率 

分 类 号：O439[机械工程—光学工程]