为了增加ICF激光驱动器的灵活性,使其可满足多种聚变点火方式,激光驱动器激光打靶角度的优化设计应以间接驱动为主,同时兼顾直接驱动。以神光Ⅲ主机装置为例,基于已有的间接驱动激光打靶角度设计,用球谐模和三维辐照场方法,完成了兼顾直接驱动打靶角度的优化,结果表明优化设计的打靶角度可实现小于1%的球靶表面辐照均匀性。同时分析了激光参数对辐照性能的影响,并获得了满足直接驱动要求的陡边小焦斑设计。 In order to increase the flexibility of the ICF laser driver so that it can satisfy a variety of fusion ignition methods, the optimal design of the laser driver laser targeting angle should be driven indirectly, taking into account the direct drive. Taking Shenguang Ⅲ host device as an example, based on the existing indirectly driven laser shooting angle design, spherical harmonic mode and three-dimensional irradiation field method, the optimization of both the direct drive and the shooting angle was completed. The results show that the optimized shooting angle can be realized Less than 1% of the ball target surface irradiation uniformity. At the same time, the influence of the laser parameters on the irradiation performance was analyzed and the design of small focal spot with steep edge that satisfied the requirement of direct driving was obtained.