Method and device for the surface treatment of a workpiece by means of a laser beam of specific beam-spot geometry

摘要

A description is given of a method and a device for the surface treatment of a workpiece (16), a specific beam-spot geometry of the circular ring-shaped beam cross-section (14) of a laser (10), in particular an astable high energy laser, being established on the workpiece (16) by means of an optical device (20), which is provided for the purpose of compressing the circular ring-shaped beam cross-section (14) of the laser beam (12) in one spatial direction (24). <IMAGE>