中国物理B ›› 2022, Vol. 31 ›› Issue (8): 86105-086105.doi: 10.1088/1674-1056/ac6165
Theoretical and experimental studies on high-power laser-induced thermal blooming effect in chamber with different gases
Xiangyizheng Wu(吴祥议政)1,2,4, Jian Xu(徐健)1,2,3,†, Keling Gong(龚柯菱)1,2,3, Chongfeng Shao(邵崇峰)1,2,3, Yang Kou(寇洋)1,2,3, Yuxuan Zhang(张宇轩)1,2,4, Yong Bo(薄勇)1,2,3,‡, and Qinjun Peng(彭钦军)1,2,3
- 1 Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2 Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3 Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China;
4 University of Chinese Academy of Sciences, Beijing 100190, China
Theoretical and experimental studies on high-power laser-induced thermal blooming effect in chamber with different gases
Xiangyizheng Wu(吴祥议政)1,2,4, Jian Xu(徐健)1,2,3,†, Keling Gong(龚柯菱)1,2,3, Chongfeng Shao(邵崇峰)1,2,3, Yang Kou(寇洋)1,2,3, Yuxuan Zhang(张宇轩)1,2,4, Yong Bo(薄勇)1,2,3,‡, and Qinjun Peng(彭钦军)1,2,3
- 1 Key Laboratory of Solid-State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2 Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3 Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China;
4 University of Chinese Academy of Sciences, Beijing 100190, China
摘要： High-power laser induced thermal blooming effects in a closed chamber with three different gases are investigated theoretically and experimentally in this work. In the theoretical treatment, an incompressible gas turbulent model is adopted. In the numerical simulation the gas refractive index as a function of both the temperature and pressure is taken into consideration. In the experimental study the pump-probe technology is adopted. A high-power 1064-nm fiber laser with maximum output power of 12 kW is used to drive the gas thermal blooming, and a 50-mW high-beam-quality 637-nm laser diode (LD) is used as a probe beam. The influences of the gas thermal blooming in the chamber on the probe beam wavefront and beam quality are analyzed for three different gases of air, nitrogen, and helium, respectively. The results indicate that nitrogen is well suitable for restraining thermal blooming effect for high-power laser. The measured data are in good agreement with the simulated results.
中图分类号: (Ultraviolet, visible, and infrared radiation effects (including laser radiation))
- 61.80.Ba