Multi-beam processing with Petr Hauschwitz MBP | WEBINAR

Functional surfaces are surfaces whose properties have been engineered,  often by the creation of ordered topographic features such as Laser Induced periodic surface structures (LIPSS). Such surfaces are highly interesting due to various ecological, economic and engineering benefits they possess, by having properties such a hydrophobicity, reduced or increased friction, anti-bacterial activity, chemical reaction enhancement, and other application-enhancing properties. One of the main challenges in the production of such surfaces by laser ablation is the slow rates of texturing that are achievable using typical methods such as point-by-point scanning. Some methods such as Direct Laser interference patterning (DLIP) have bypassed these limits by simultaneously patterning an area and only stitching between such areas, but these methods often require off-axis, non-standard and cylindrical optics that are not commonly used in the high power laser industry. In my talk, I will present Holo/Or’s  DLITe area texturing method, developed in cooperation with HiLase center, that enables texturing of large areas with a single pulse and without any special anamorphic or off-axis optics. The method utilized a single DOE, a high pulse energy laser (such as the PERLA 100), and a standard focusing optic (F-theta), to achieve rates of more than 0.06m2/ min per laser.