Optical dynamics in ultra-short laser pulse irradiated copper revealed by simulation and experimental measurement with time-resolved pump-probe ellipsometry

In the last decade, ultrashort pulsed lasers have been developing to a precise tool for material processing. Experimental and theoretical studies on the laser ablation efficiency of metals have demonstrated a high degree of dependency on the laser pulse duration. Within these studies, the transient energy deposition in the material defines the thermal and mechanical material response after laser irradiation.