Peculiarities of laser damage of aluminum alloy in rarefaction atmosphere

Abstract

The researches and data processing of laser pulse interaction with the surface of the target of aluminum alloy versus the air pressure and pulse power were carried out. The alloy 1420 is composed of 92% Al, 6% Mg and 2% Li. The industrial laser with pulse-half width of 3 ms was used to achieve the power density up to 2 x 106 W/cm2.