飞秒激光烧蚀典型金属表面产生冲击波膨胀研究

魏健; 张彬; 刘晖; 张航

doi:10.11858/gywlxb.20190736

飞秒激光烧蚀典型金属表面产生冲击波膨胀研究

doi: 10.11858/gywlxb.20190736

魏健^1,,
张彬^1,*, ,,
刘晖²,
张航³

1.
四川大学电子信息学院，四川成都　610065
2.
西安工程大学机电工程学院，陕西西安　710048
3.
中国工程物理研究院流体物理研究所，四川绵阳　621999

基金项目: 国家自然科学基金（11872058）；超光滑表面无损检测安徽省重点实验室开放课题（CGHBMWSJC06）

详细信息

作者简介:
魏　健（1986－），男，硕士研究生，主要从事超快激光诊断技术研究. E-mail：wj_skx@126.com

通讯作者:
张　彬（1969－），女，博士，教授，主要从事高功率激光技术、非线性光学等研究. E-mail：zhangbinff@sohu.com

中图分类号: O347.5
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出版历程
- 收稿日期: 2019-03-08
- 修回日期: 2019-03-31

Shockwave Expansion on Typical Metal Surface Ablated by Femtosecond Laser

WEI Jian^1
,,
ZHANG Bin^{1,*
, ,},
LIU Hui²,
ZHANG Hang³

1.
College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2.
School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
3.
Institute of Fluid Physics, CAEP, Mianyang 621999, China

摘要

摘要: 利用时间分辨阴影成像技术进行飞秒激光烧蚀金属表面研究可以直观获取飞秒激光烧蚀金属表面产生冲击波膨胀过程的图像。通过对比飞秒激光烧蚀金属铝、铜、铁靶表面的冲击波膨胀形式发现：金属铜、铁表面的冲击波均以球面波形式传播；由于受到烧蚀物质喷溅的影响，铝靶表面竖直方向的冲击波传播形式由球面波转化为柱面波。
- 飞秒激光 /
- 冲击波 /
- 超快阴影成像 /
- 金属烧蚀
Abstract: Shadowgraphs of shockwave expansion could be directly obtained by time-resolved shadowgraph imaging system when femtosecond ablating metal surface. The shock wave expansion on Cu and Fe surface obeys spherical propagation compared with that on Al target. Due to the influence of material ejection, the shockwave expansion on Al surface changes from spherical propagation to cylindrical propagation.
- femtosecond laser /
- shock wave /
- ultrafast shadowgraph imaging /
- metal ablation

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图 1 时间分辨阴影成像系统实验装置

Figure 1. Experimental setup of time-resolved shadowgraph imaging system

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图 2 飞秒激光烧蚀金属Al表面产生冲击波膨胀成像

Figure 2. Time-resolved shadowgraph imaging of ultrafast shockwave evolution induced by femtosecond laser ablating on Al target

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图 3 飞秒激光烧蚀金属Cu表面冲击波膨胀成像

Figure 3. Time-resolved shadowgraph imaging of ultrafast shockwave evolution induced by femtosecond laser ablating on Cu target

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图 4 飞秒激光烧蚀金属Fe表面冲击波膨胀成像

Figure 4. Time-resolved shadowgraph imaging of ultrafast shockwave evolution induced by femtosecond laser ablating on Fe target

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图 5 飞秒激光烧蚀Al、Cu和Fe金属表面冲击波膨胀动力学分析

Figure 5. Ultrafast dynamics of shockwave induced by femtosecond laser ablation on metal surface of Al, Cu and Fe

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图 6 不同能量密度飞秒激光烧蚀Al表面的冲击波膨胀成像

Figure 6. Ultrafast shock wave expansion on Al surface under femtosecond ablating with different pulse energy

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参考文献(13)

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