Study of femtosecond ablation on aluminum film with 3D two-temperature model and experimental verifications

被引：43

作者：

Li, Qiang ^{[1
]}

Lao, Huiying ^{[1
]}

Lin, Jia ^{[1
]}

Chen, Yuping ^{[1
]}

Chen, Xianfeng ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Minist Educ, Dept Phys, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2011年 / 105卷 / 01期

基金：

中国国家自然科学基金;

关键词：

LASER-ABLATION; THRESHOLD FLUENCE; METALS; PULSES; DAMAGE; GLASS;

D O I：

10.1007/s00339-011-6579-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a 3D two-temperature model is introduced to investigate femtosecond ablation on aluminum film. 3D temperature evolutions for both electrons and lattice are obtained, which present us a vivid view of the energy transformation process during femtosecond ablation. Simulated 3D ablation craters irradiated by a single pulse with different energy are acquired, from which we can easily and precisely predict crater depth and radius before ablation takes place. In the experiment we measure the radii of the craters ablated by pulses with different energy and numbers delivered from a chirped pulse amplification Ti: sapphire system. The threshold fluence for both single and multi pulses are obtained. Comparisons are made between results of the experiment and relative simulated calculations show the reliability of our proposed calculation model.

引用

页码：125 / 129

页数：5

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