微秒聚焦激光剥蚀铁靶实验设计

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将激光原理与实验相结合,测量了自由运转钬激光的脉冲能量、脉冲宽度和重复频率,并增加了聚焦激光剥蚀铁靶的实验。用氟化钙凸透镜将钬激光器输出激光聚焦在铁靶材表面,在体式显微镜下观察剥蚀后凹坑形貌。实验结果表明:短脉宽的激光用于剥蚀靶材凹坑的深径比大,无明显热损伤或机械性损伤,表面光滑且无剥蚀物沉积。
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