Limit of overheating and the threshold behavior in laser ablation

The investigation of the threshold behavior in laser ablation by using constant temperature and pressure molecular dynamics simulations was discussed. It was found that there was a well defined fluence at which proper conditions for the phase transition could be attained when the laser fluence increases in ablation. The simulations suggest a computational pathway for exploring the microscopic nature of the homogeneous nucleation. The rate of nucleation in a narrow temperature range at approximately 90% of the critical temperature was found to increase sharply.