期刊
APPLIED SURFACE SCIENCE
卷 265, 期 -, 页码 302-308出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2012.10.200
关键词
Femtosecond laser; Material ablation; Two-temperature model; Superheating; Phase explosion
Simulation results of femtosecond laser ablation of copper were compared to experimental data. The numerical analysis was performed using a predictive model, including a two temperature model, an optical critical point model with three Lorentzian terms, two phase change models for melting and evaporation under superheating, and a phase explosion criterion for ejection of metastable liquid decomposing into droplets and vapor phase. The experiments were conducted with a 120-fs, 800-nm Ti:sapphire lasers for fluences up to 408 J/cm(2). The ablation depths were measured, and the ablation rate was estimated. It was shown that the present numerical simulations correlate well with the experimental data over the entire range of the laser fluences investigated except for those below 0.8 J/cm(2), indicating that the proposed model is an accurate and efficient tool for predicting ultrashort-pulsed laser material ablation. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据