Abstract: A method for generating secondary radiation includes providing a target material in a target region, and applying a pulse sequence of laser pulses to the target material in the target region. Secondary radiation is generated as a result of interaction of the target material with the pulse sequence. The pulse sequence has a pulse train of at least two pre-pulses and a main pulse following the pulse train. A total energy of the pre-pulses of the pulse train is between 0.2 mJ and 10 mJ. A temporal pulse interval between successive pre-pulses of the pulse train is between 50 ps and 500 ns. A pulse energy of the main pulse is between 2 mJ and 50 mJ. A pulse duration of the main pulse is between 15 fs and 300 fs. A temporal pulse interval between the pulse train and the main pulse is between 1 ns and 1 ?s.

Abstract: A method for generating secondary radiation includes providing a target material in a target region, and applying a pulse sequence comprising laser pulses to the target material in the target region. Interaction of the target material with the pulse sequence generates secondary radiation. The pulse sequence includes a prepulse and a main pulse trailing the prepulse. A pulse energy of the prepulse is between 2 ?J und 200 ?J. A pulse duration of the prepulse is between 200 fs and 5 ps. A pulse energy of the main pulse is between 2 mJ and 50 mJ. A pulse duration of the main pulse is between 15 fs and 300 fs. A pulse time interval between the prepulse and the main pulse is between 1 ps and 1 ns.

Abstract: A laser system for generating secondary radiation through interaction of a focused primary laser beam with a target material includes a laser beam source for providing a raw laser beam, and a beam guidance device for forming the focused primary laser beam from the raw laser beam. The focused primary laser beam is directed towards a target region in order to interact with the target material arranged in the target region. The beam guidance device includes a beam focusing device configured to form the primary laser beam by focusing a laser beam entering the beam focusing device, which corresponds to the raw laser beam. The beam focusing device includes at least two mirror elements spaced apart from one another. The beam focusing device has a numerical aperture between 0.001 and 0.01 provided that the primary laser beam propagates in a medium with a refractive index of less than 1.01.

Abstract: A method for separating a workpiece includes providing a machining laser beam that forms a plurality of focusing elements, introducing the focusing elements into a material of the workpiece, and moving the focusing elements parallel to an advancing line relative to the material. Material modifications are formed in the material along a machining surface that protrudes with respect to a partial region of the workpiece in a preferred direction. The method further includes subjecting the material to a heating laser beam that is moved relative to the material along a heating laser beam advancing line, thereby separating the material along the machining surface. The heating laser beam advancing line runs parallel to and is spaced apart from the advancing line with a positional offset that is anti-parallel to the preferred direction. The positional offset is at least 10% and at most 50% of a diameter of the heating laser beam.

Abstract: A transparent component includes a functionalized surface. The functionalized surface has dimples and laser-induced periodic surface structures. The functionalized surface is functionalized by the dimples and the laser-induced periodic surface structures. The dimples and the laser-induced periodic surface structures spatially overlap. The dimples have a depth between 100 nm and 2000 nm.

Abstract: A method for producing dimples on a surface of a transparent material using laser pulses of a short-pulse laser is provided. The method includes producing at least one dimple of the dimples on the surface of the transparent material by using a single laser pulse or a single laser burst.