HIGH-INTENSITY KRF EXCIMER-LASER PROCESSING OF METAL-SURFACES

The interaction of high-intensity pulsed UV radiation with solid mater ials involves complex phenomena. Generally, they depend on different f actors including laser wavelength, pulse duration, energy and power de nsity, laser spot size, nature of the material and surface characteris tics. The experiments presented in this paper have been performed usin g 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/cm2 and a powe r density from 1 up to 300 MW/cm2.