Simulation of single-, double- and multi-pulse laser ablation of metals

Abstract

We present preliminary results of hydrodynamic modeling of the laser ablation of copper by femtosecond laser pulses in regimes of single-, double- and multi-pulse irradiation. It is demonstrated that in comparison to a single-pulse regime the double-pulse one with a short subnanosecond delay is less effective while multi-pulse ablation with a subnanosecond intraburst is more effective. We show that multi-pulse ablation produces deeper crater in comparison with single-pulse or double-pulse regimes of the same energy.