A processing method including steps for splitting a single beam into a plurality of beams including a zero-order diffracted beam, by diffracting the single beam by a diffractive element, for turning an array of focused beam spots obtained from the plurality of beams about the center of the zero-order...http://www.google.es/patents/US7009138?utm_source=gb-gplus-sharePatente US7009138 - Laser processing method, laser welding method, and laser processing apparatus
Laser processing method, laser welding method, and laser processing apparatus
