Shielding effects and re-deposition of material during processing of metals with bursts of ultra-short laser pulses
Shielding effects and re-deposition of material during processing of metals with bursts of ultra-short laser pulses
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DOI：
10.1016/j.apsusc.2018.01.297
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发表时间：
2018-05-15
影响因子：
6.7
通讯作者：
Graf, Thomas
中科院分区：
文献类型：
--
作者：
Foerster, Daniel J.;Faas, Sebastian;Graf, Thomas
本文研究了超短脉冲激光烧蚀铜材料的实验研究。在阴影实验的基础上，它表明，被第一脉冲烧蚀的材料是屏蔽爆发的第二脉冲。此外，材料被重新沉积，这显著地抵消了烧蚀过程。将第三脉冲添加到爆发再次导致材料的烧蚀，但是烧蚀云包含比由单个脉冲产生的烧蚀云更多的材料。(C)2018爱思唯尔B.V.保留所有权利。
Investigations on the ablation of copper with ultra-short laser pulses using single pulses and bursts of two or three pulses are presented in this paper. On the basis of shadowgraphic experiments, it is shown that the material ablated by the first pulse is shielding the second pulse of a burst. In addition, material is re-deposited, which significantly counteracts the ablation process. Adding a third pulse to the burst again leads to ablation of material, but with an ablation cloud containing more material than the one generated by a single pulse. (C) 2018 Elsevier B.V. All rights reserved.