A LASER USING AT LEAST ONE YTTERBIUM BASED FIBER CUTTING PROCESS, AT LEAST CONTROLLING THE ENERGY OF THE LASER SOURCE, THE FOCUS OF THE FOCUSED RAY AND THE RADIANT QUALITY FACTOR

摘要

The invention relates to method for cutting a part using a laser beam, involving the use of laser beam generation means comprising at least one ytterbium-based fibre having a wavelength of between 1 and 4 m in order to generate the laser beam. The laser beam is selected to have a power of less than 100 kW, a power density of at least 1 MW/cm2, a focused beam diameter of at least 0.1 mm and a quality factor (BPP) of less than 10 mm·mrad.