四程放大系统腔镜位置变形镜的面形解
Proof deformable mirror face solution at cavity mirror in four-pass amplifier system
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摘要: 根据在大型高功率固体激光装置中自适应光学技术的应用研究，将变形镜置于腔镜位置，有利于提高自适应光学系统的校正动态范围。基于变口径90°翻转四程放大系统的光路特点，从理论上比较完整地解决了四程放大系统腔镜位置变形镜面形解的存在性问题，并对口径变换比值(缩束比)与面形求解之间的关系问题进行了数值模拟，结果表明:只要缩束比小于1，对应系统连续波前畸变的腔镜位置面形解是存在的，且随着缩束比减小，解的收敛性增强。Abstract: Based on the experience of adaptive optics application in high power laser systems, a deformable mirror located at cavity mirror can largely improve the dynamic range of correction aberrations. The four-pass amplifier laser facility has two features different from other facilities. The beam size has an alteration and beam rolls an angle of 90° between 1~2 pass and 3~4 pass propagation. The solution existence of deformable mirror face at this four-pass amplify facility cavity mirror is proved. How the ratio of beam alteration to affect the face solving problem of deformable mirror is analyzed by numerical simulation.
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Key words:
- adaptive optics /
- wavefront correction /
- deformable mirror /
- face solution /
- four-pass amplify system
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