Melting and resolidification of gold film irradiated by nano- to femtosecond lasers

被引：0
|
作者：
Y. Zhang
J.K. Chen
机构：
[1] University of Missouri-Columbia,Department of Mechanical and Aerospace Engineering
来源：
Applied Physics A | 2007年 / 88卷
关键词：
Femtosecond Laser; Coupling Factor; Lattice Temperature; Interfacial Velocity; Interfacial Location;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Rapid melting and resolidification of a free-standing gold film subject to nano- to femtosecond laser pulses are investigated using the two-temperature model in conjunction with an interfacial tracking method. The interfacial velocity, as well as elevated melting temperature and depressed solidification temperature, in the ultra-fast phase-change process are obtained by considering the interfacial energy balance and nucleation dynamics. A nonlinear electron heat capacity and a temperature-dependent electron–lattice coupling factor for the rapid phase change are taken into account. Effects of laser pulse width and fluence on melting and resolidification are also studied.
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页码：289 / 297
页数：8
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