High-intensity KrF excimer laser processing of metal surfaces

Abstract

The interaction of high-intensity pulsed UV radiation with solid materials involves complex phenomena. Generally, they depend on different factors including laser wavelength, pulse duration, energy and power density, laser spot size, nature of the material and surface characteristics. The experiments presented in this paper have been performed using a 248 nm KrF laser which allowed aluminium and titanium alloys to be irradiated with an energy density from 0.3 up to 100 J/cm 2 and a power density from 1 up to 300 MW/cm 2.