基于XGⅡ激光装置实验平台建立了用于ICF基准物理实验的子束激光系统,采用软边光阑和空间滤波器组合的像传递技术实现了光束的空间整形和等像面传输,并利用Fresnel光束传输计算程序对系统进行了优化设计,分析了空间滤波器小孔尺寸以及软边光阑对光束波面传输的影响,并对优化设计结果进行了分析和讨论,所用方法和所得结论对高功率固体激光放大系统的设计具有一定应用意义.

A sub-beam laser system used for ICF Benchmarked Experiments has been set up based on XGII laser facility. The soft aperture slots and multi spatial filters are used to transmit the same phase of laser beams. The system are optimized in design by a program of Fresnel, where the sizes of pinholes of spatial filters which influence laser propagation are analysed. The design optimization result has also been discussed , and the methods and results are applicable to the design of high power solid laser amplifier system.