Fig. 1. Schematic illustration of angular smoothing.角向匀滑方案示意图

Fig. 2. Intensity distributions of target face: (a) CPP+SSD; (b) CPP+RS; (c) CPP+AS.靶面光强分布　(a) CPP+SSD; (b) CPP+RS; (c) CPP+AS

Fig. 3. Focal-spot characteristics of different schemes: (a) Change regulation of integral time of contrast; (b) FOPAI.不同方案的焦斑特性　(a)光通量对比度积分时间的变化规律; (b) FOPAI

Fig. 4. Intensity distribution on target surface: (a)−(f) Instant intensity; (g) average intensity.靶面光强分布　(a)—(f) 瞬时光强; (g) 平均光强

Fig. 5. Uniformity improvement of focal spot when AS is applied with RS: (a) Contrast curves; (b) FOPAI curves; (c) focal-spot intensity distribution; (d) swiping velocity distribution of speckles in radial direction.AS+RS联用的束匀滑方案　(a) 光通量对比度; (b) FOPAI; (c)焦斑光强分布; (d)散斑扫动速度径向分布

Fig. 6. Contrast variations with different (a) central wavelength shift and (b) topological charges |m|. 焦斑光通量对比度随　(a)中心波长差 , (b)拓扑荷数|m|的变化