• High Power Laser Science and Engineering
  • Vol. 8, Issue 4, 04000e45 (2020)
Yangshuai Li1, Bingyan Wang1, Panzheng Zhang1, Yanli Zhang1, Yanfeng Zhang1, Shenlei Zhou1, Weixin Ma2, and Jianqiang Zhu1、*
Author Affiliations
  • 1Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, China
  • 2Shanghai Institute of Laser Plasma, China Academy of Engineering Physics, Shanghai201800, China
  • show less


    As the key part for energy amplification of high-power laser systems, disk amplifiers must work in an extremely clean environment. Different from the traditional cleanliness control scheme of active intake and passive exhaust (AIPE), a new method of active exhaust and passive intake (AEPI) is proposed in this paper. Combined with computational fluid dynamics (CFD) technology, through the optimization design of the sizes, shapes, and locations of different outlets and inlets, the turbulence that is unfavorable to cleanliness control is effectively avoided in the disk amplifier cavity during the process of AEPI. Finally, the cleanliness control of the cavity of the disk amplifier can be realized just by once exhaust. Meanwhile, the micro negative pressure environment in the amplifier cavity produced during the exhaust process reduces the requirement for sealing. This method is simple, time saving, gas saving, efficient, and safe. It is also suitable for the cleanliness control of similar amplifiers.