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光束旋转90°多程放大系统的波前误差校正 被引量:1

Aberration correction for multi-pass amplification system with 90° beam rotation
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摘要 光束通过神光-Ⅲ原型装置四程放大系统发生了90°旋转和扩束。在四程放大系统腔镜处放置变形镜校正系统像差是一种新的自适应光学方案,推导出被校正像差与变形镜面形之间的数学关系。理论推导表明,在扩束比大于1的前提下,腔镜处变形镜可以校正系统输出的任意类型的像差,且变形镜对应的面形唯一。理论分析和计算仿真说明该方案的校正能力与像差类型和扩束比有关,扩束比增大将增强变形镜校正像散的能力,但系统旋光消像散的能力也将减弱。 Shenguang-Ⅲ prototype is a multl-pass laser amplification system which includes a particular configuration of 4-pass amplifier, The beam rotates 90° and expands when it passes the 4-pass amplifier. A new scheme of adaptive optics for system aberration correction sets deformable mirror as cavity mirror of the 4-pass amplifier. This paper demonstrates this scheme and develops the mathematical relationship between deformable mirror and system aberration. Simulation and mathematic analysis indicate that the correcting capacity has relations with the beam expansion factor and the type of system aberration.
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2007年第7期1167-1171,共5页 High Power Laser and Particle Beams
关键词 自适应光学 变形镜 多程放大 系统像差 Adaptive optics Deformable mirror Multipass amplifier System aberration
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