Copper thickness dependence of the electron and lattice temperature using a two-temperature model of femtosecond pulsed laser ablation

Abstract

The electron and lattice temperature of copper target with different thickness ablated with femtosecond laser pulse is calculated using a two-temperature model. Numerical results showed the electron reached the highest temperature right after the laser pulse hits the surface of the material while lattice reached the highest temperature after a few picoseconds. We observed that increasing the thickness of the copper target results to decrease in the highest temperature obtained by the electron and the lattice. However, the general spatial and temporal behavior of the electron and lattice temperature remains independent of the copper thickness.