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当前对由热效应引起的激光器及其光学元件变形和破坏问题的研究越来越受到国内外学者的重视。控制镜子温升的方法通常有改进水冷铜镜、采用半导体制冷、相变技术等。文中对这些方法进行了比较,重点阐述了多层水冷这一新技术。工程实践结果证明,该方法能有效地控制镜子温升,将镜面变形控制在一个很小的范围内,为解决阻碍高功率激光器发展的“瓶颈”—热效应问题,提供了有力的参考依据。
At present, the researches on the deformation and destruction of the laser and its optical components caused by the thermal effect have drawn more and more attention from domestic and foreign scholars. Methods to control the mirror temperature rise usually have improved water-cooled copper mirror, the use of semiconductor refrigeration, phase change technology. The paper compares these methods and focuses on the new multi-layer water cooling technology. The engineering practice proves that this method can effectively control the temperature rise of the mirror and control the deformation of the mirror in a very small area, which provides a powerful reference for solving the “bottleneck” - thermal effect hindering the development of high power lasers.