OPTICAL ARRANGEMENT AND ITS USE

• Main Authors: LEDERMANN, ALEXANDRA, WEGENER, MARTIN, VON FREYMANN, GEORG
• Format: Patent
• Language: English; French
• Published: 07.04.2015
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention relates to an optical arrangement (10) having a laser (1), wherein an amplitude mask (3) is introduced in the beam path of the laser beam (2) coming from the laser (1), between the laser (1) and a focusing element (4), such that the laser beam (2) can be guided such that the laser beam (2) strikes the amplitude mask (3) before the laser beam is focused in the focusing element (4) and the laser beam (2'), which has been modified by the focusing element (4), is directed at a focal point (6) and, if appropriate, at least two sub-maxima (7, 7') in a photosensitive material (5). The arrangement (10) is thus suitable for producing chemical or physical changes, ablations, micro-explosions, plasmas or micro-tears in the photosensitive material (5). The arrangement (10) is preferably used for carrying out single-photon or multi-photon absorption in the focal point (6) or in one of the at least two sub-maxima (7, 7') of the modified laser beam (2') in the photosensitive material (5).