Laser makes micromachines right

A study of porous surfaces having micropores significantly smaller than laser spot on the stainless steel 304L sample surface induced by a picosecond regenerative amplified laser, operating at 1064 nm, is presented. Variations in the interaction regime of picosecond laser pulses with stainless steel surfaces at peak irradiation fluences(Fpk=0.378–4.496 J/cm2) with scanning speeds(v=125–1000 μm/s) and scan line spacings(s=0–50 μm) have been...