He Xing

Recent progress of adaptive beam cleanup of solid-state slab lasers in Institute of Optics and Electronics, Chinese Academy of Sciences

The beam qualities of high power solid-state slab lasers are severely limited by many factors such as thermal effects of the gain medium. Simultaneously achieving high beam quality and high average power remains a fundamental problem in the development of high power lasers. Adaptive optics systems are able to significantly improve beam qualities by compensating for the static and dynamic phase distortions of the laser beams. In recent years, Institute of Optics and Electronics, Chinese Academy of Sciences has developed low-order aberration compensators, weighted least-square wavefront reconstruction algorithms, and generic real-time wavefront processors for solid-state slab lasers. Based on these key components, over two dozens of adaptive optics systems are delivered to a variety of solid-state slab laser systems in China for beam cleanup. With effective operations of these adaptive optics systems, the beam qualities of the laser systems have all been well improved.高功率固体板条激光器的光束质量严重受限于增益介质热效应等多种因素。如何同时获得高平均功率和高光束质量是激光发展过程中面临的一个基本物理问题。自适应光学技术能够有效补偿固体板条激光系统输出光束的静态和动态像差，是改善光束质量的有效手段。近年来中国科学院光电技术研究所掌握了低阶像差补偿器、加权优化波前复原方法、通用波前处理机等关键技术，为国内多个固体板条激光系统研制了二十余套自适应光学光束净化系统，显著改善了光束质量，保障了上述激光系统的有效运用。