图为优化后的聚焦光斑几何形态和能量分布状态,从图 a)中可以看到聚焦光斑呈现完整的环形,从图b)中可以看到光斑能量在x轴和y轴方向上分布基本对称。
The geometry and energy distribution of the optimized focused spot are shown in Fig. a), which shows a complete ring shape, and Fig. b), which shows the basic symmetry of the spot energy distribution in the x-axis and y-axis directions.