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研究了在不同输出功率下 ,输出耦合镜热形变所引起的输出光束Rayleigh长度的变化规律。采用压力变形反射镜对Rayleigh长度变化进行了实时补偿 ,修正了由于输出耦合镜热变形造成的影响 ,改善了高功率CO2 激光器的聚焦特性
The variation law of Rayleigh length of output beam caused by thermal deformation of output coupling mirror under different output powers was studied. Real-time compensation of Rayleigh length changes with pressure-deforming mirrors, which improves the focusing characteristics of high-power CO2 lasers due to the effects of thermal deformation of the output coupling mirror