Simulation of ultrashort double-pulse laser ablation

被引：46

作者：

Povarnitsyn, Mikhail E. ^{[1
]}

Itina, Tatiana E. ^{[1
,2
]}

Levashov, Pavel R. ^{[1
]}

Khishchenko, Konstatntin V. ^{[1
]}

机构：

[1] RAS, Joint Inst High Temp, Moscow 125412, Russia

[2] CNRS, Lab Hubert Curien, UMR 5516, F-42000 St Etienne, France

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

Double-pulse ablation; Crater formation; Suppression of ablation;

D O I：

10.1016/j.apsusc.2010.11.158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, we study the mechanisms of femtosecond double-pulse laser ablation of metals. It was previously shown experimentally that the crater depth monotonically drops when the delay between two successive pulses increases. For delays longer than the time of electron-ion relaxation the crater depth can be even smaller than that produced by a single pulse. The results of the performed hydrodynamic simulation show that the ablation can be suppressed due to the formation of the second shock wave. The modeling results of the double-pulse ablation obtained for different delays correlate with the experimental findings. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：5168 / 5171

页数：4

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