[19a-N304-1~10] 3.7 Laser processing

[19a-N304-7] LIPSS Formation by Ultra-short-pulse Laser Irradiation

〇Syusuke Yoshikawa¹, Reina Miyagawa¹, Osamu Eryu¹ (1.NITech)

Keywords:LIPSS, Laser

We have studied the conditions for forming LIPSS when the pulse width of the laser is on the order of femtoseconds and nanoseconds, and have evaluated the crystalline state of the formed LIPSS. As a result, LIPSS maintained crystalline quality at the femtosecond pulse width, but was partially
polycrystalline at the nanosecond pulse width. In this study, we investigated the influence of subpico to picosecond lasers on LIPSS formation.