Abstract: A system for sorting reusable raw-material pieces, where the chemical composition of the raw-material pieces is analyzed by laser-induced breakdown spectroscopy (LIBS), where the raw-material pieces in a first step are subjected to a plurality of first laser pulses in order to remove surface coatings and/or contaminants from the raw-material pieces, and in a second step, one or more further laser pulses from the same laser are used to generate a plasma.

Abstract: The present invention, among other things, relates to an apparatus (10) for working a surface (11) of a workpiece, in particular a metal workpiece, by means of laser radiation. The apparatus (10) is characterized by a scanner device (20), which is mounted in a rotationally immovable manner in the working apparatus (10) and is intended for shaping a laser beam that is to be deflected and positioned onto the surface to be worked, a control device for changing the orientation of the scanning direction of the laser beam shaped in the scanner device (20), and an optics element (40), which is movable about an axis of rotation (12), is arranged downstream of the scanner device (20) in the beaming direction of the laser beam and advantageously has a beam splitter device for splitting the laser beam into two or more beam parts (41, 42) and for deflecting and positioning the beam parts (41, 42) onto the surface (11) that is to be worked.