The ripple damage on the K9 glass surface could be obviously observed, and the failure surface can be devided into three parts: ablation zone, microcrack zone and brittle fracture zone.

• 随着激光脉冲个数的增加，损伤由点状破坏演变为损伤区，微裂纹逐渐增长，损伤面积逐渐增大。