基于神光-Ⅲ原型装置上自适应光学系统应用获得的理论和实验结果, 研究了其中的主要科学技术问题, 提出了相应的解决方法, 通过实验验证了其有效性。为满足未来大型高功率固体激光驱动器的波前补偿要求, 理论上研究了自适应光学系统与连续相位板(PP)相结合的补偿方案。采用数值模拟的方法研究了“大口径变形镜(DM)＋1块连续相位板”和“小口径变形镜+2块连续相位板”两种方案的波前补偿能力。模拟结果表明, 采用“小口径变形镜+2块连续相位板”的方案能有效地实现全光路系统波前畸变控制, 同时还可以兼顾物理实验对焦斑尺寸和均匀性的要求, 为未来高功率固体激光驱动器波前补偿方案设计提供理论依据。

Based on the theoretical and experimental results of adaptive optics system application in SG-Ⅲ prototype facility, the main scientific and technical problems were researched and solved, the efficiency was verified by experiment. In order to fulfill need of future high power solid-state laser driver wavefront correction, the scheme of combined adaptive optics system with continuous phase plate (CPP) was researched in theory. “One big deformable mirror (DM) with one CPP ”and “One small DM with two CPPs” schemes were analyzed by numerical modeling. The result showed that the latter scheme can achieve the goal of controlling the entire beam wavefront, and fulfill the need of focal spot size and uniformity for physics experiment. The results can also provide theoretical reference to design wavefront correction system in high power solid-state laser facility.