https://doi.org/10.1051/epjap:2008061
A unified thermal model of thermophysical effects with pulse width from nanosecond to femtosecond
1
Department of Physics, Huazhong University of Science
and Technology, Wuhan 430074, P.R. China
2
State Key Laboratory of Magnetic Resonance and Atomic
and Molecular Physics, Wuhan Institute of Physics and Mathematics,
Chinese Academy of Sciences, Wuhan, 430071, P.R. China
Corresponding author: ranranfang2@gmail.com
Received:
8
October
2007
Revised:
21
January
2008
Accepted:
11
March
2008
Published online:
30
April
2008
This paper presents a unified thermal model, which can describe the thermophysical effects with laser pulse width ranges from nanosecond to femtosecond. Take gold target as an example, the numerical solutions are obtained from the unified model using a finite difference method. The temperature distribution of the electron and the lattice along with space and time at a certain laser fluence is presented. The time-dependence of lattice and electron temperature on the surface for different laser fluence is also performed. The satisfactory agreement between our numerical results and experimental results of vaporization threshold indicates that the unified thermal model is correct and reasonable.
PACS: 72.15.Eb – Electrical and thermal conduction in crystalline metals and alloys / 79.20.Ds – Laser-beam impact phenomena
© EDP Sciences, 2008
