METHOD FOR THE ABLATION CUTTING OF A WORKPIECE BY MEANS OF A PULSED LASER BEAM

摘要

The method according to the invention for ablating an in particular transparent workpiece (1) by means of a pulsed laser beam (2) comprises the following steps: a) pretreating the workpiece surface (3) by moving the pulsed laser beam (2) over the workpiece surface (3) along a surface path (4), wherein consecutive laser pulses (2', 2") of the pulsed laser beam (2) have a first pulse overlap (61) on the workpiece surface (3a) in the path direction (5); and b) ablating the pretreated workpiece surface (3) by moving the pulsed laser beam (2) over the workpiece surface (3) along the surface path (4) multiple times, wherein consecutive laser pulses (2', 2") of the pulsed laser beam (2) have a second pulse overlap (62) on the workpiece surface (3) in the path direction (5), which second pulse overlap is less than the first pulse overlap (61).