Abstract: A method of laser processing a glass substrate comprising focusing a pulsed laser beam into a laser beam focal line into the glass substrate, the glass substrate having a feature formed on a first surface of the glass substrate, wherein a first portion of the laser beam focal line is focused at the first surface of the glass substrate and a second portion of the laser beam focal line is focused at a second surface of the glass substrate that is opposite the first surface, and translating the glass substrate and the laser beam relative to each other along a first contour, thereby laser forming a plurality of defect lines along the first contour within the substrate.

Abstract: A laser processing device for generating a plurality of grooves in a surface comprises an optical diffraction arrangement adapted to receive a laser radiation and to generate an output radiation hereupon, the output radiation having a plurality of intensity maxima. An actuator arrangement is provided for generating a relative movement between the output radiation and the surface, wherein each intensity maximum generates a groove of the plurality of grooves.

Abstract: Method and device for producing riblets by applying the riblets by laser interference patterning by a carbon dioxide laser.