The ablation rate is investigated on a silicon surface irradiated by a double-pulse beam crosspolarized in time delays of -1000-1000 ps. The reduced ablation rate is found clearly at delay times of 600ps.
In a conventional laser peening (C-LP) without a protective coating, a treated metallic surface is always melted after the C-LP processing, resulting in the generation of tensile residual stress. In order to establish a new LP technique without su...