Butt welding of two workpieces with an ultrashort pulse laser beam, and associated optical elements

Abstract

The present disclosure provides methods, devices, and systems for the butt welding of two, e.g., planar, workpieces, by at least one pulsed laser beam, e.g. an ultrashort pulse (“USP”) laser beam, which is focused into the workpiece material to locally melt the two workpieces in the region of their joining surface. The laser focus of the laser beam focused into the workpiece material is moved transversely with respect to the beam direction of the laser beam to produce in the region of the joining surface a weld seam extending transversely with respect to the beam direction of the laser beam.

Dependencies are inferred from the claim text.