A laser processing method of a metallic material for controlling a lateral power distribution of a laser beam in a working plane and a machine and a computer program for carrying out the method

摘要

By a focused laser beam having a predetermined transverse power distribution in at least one working plane of the metallic material and in particular by the use of a metallic material for laser cutting, A laser processing method, comprising: providing a laser beam emitting source; Directing the laser beam along a beam transport optical path to a working head disposed proximate to the material; Collimating a laser beam along a light propagation axis incident on the material; Focusing the collimated laser beam onto an area of the working plane of the material; And conducting the focused laser beam along a work path on a metal material comprising a successive work area, the shape of the laser beam having a continuous curvature comprising a plurality of independently moveable reflective areas, Reflecting the collimated beam by a deformable controlled surface reflecting element comprising a reflecting surface having a reflective surface and a reflective surface having a reflective surface on which the reflective surface is located, By controlling the arrangement of the reflective region to set a predetermined lateral power distribution of the beam in at least one working plane of the metallic material.