Abstract: The present invention relates to a diode laser with external spectrally selective feedback. It is an object of the invention is to provide an external cavity diode laser with wavelength stabilization which allows an increased overall output power in the desired wavelength range.

Abstract: The present invention relates to a diode laser with external spectrally selective feedback. It is an object of the invention is to provide an external cavity diode laser with wavelength stabilization which allows an increased overall output power in the desired wavelength range.

Abstract: The present invention relates to a diode laser with external spectrally selective feedback. It is an object of the invention is to provide an external cavity diode laser with wavelength stabilization which allows an increased overall output power in the desired wavelength range.

Abstract: The present invention relates to a diode laser with external spectrally selective feedback. It is an object of the invention is to provide an external cavity diode laser with wavelength stabilization which allows an increased overall output power in the desired wavelength range.

Abstract: The invention discloses a device for laser material machining, with at least two laser beam sources (2a-2c) which emit laser beams (5a-5c) of different wavelengths, with associated beam imaging means (3a-3c), to configure appropriately the beam paths of each associated laser beam (5a-5c), a beam superposition device (6), to overlay the laser beams (5a-5c) on each other, and imaging optics (8), to image the overlaid laser beams (5a-5c) onto a workpiece (12) so that respective focal points are associated with the laser beams (5a-5c) in the focus of the imaging optics (8) on the workpiece (12), wherein the beam imaging means image the laser beams (5a-5c) onto the respective focal points in a predefined arrangement which can be varied by means of the beam imaging means (3a-3c).

Abstract: The current invention concerns a laser beam generating device and a method for adjusting a wavelength of a laser beam. The current invention addresses the objective of further improving laser beam generation and wavelength adjustment. The current invention particularly allows for simplifying the combination of laser source elements such that they operate at different, but controlled, wavelengths with their beams overlapping. The laser beam generating device (100) comprises at least one laser source element (11) and an external cavity. The external cavity comprises an output coupler (40) and a periodic filter element (30) arranged between the laser source element (11) and the output coupler (40). The laser beam generating device is characterized in that the laser beam generating device further comprises at least two cut-off filter elements (21, 22) each arranged between the laser source element (11) and the periodic filter element (30).

Abstract: The invention discloses a device for laser material machining, with at least two laser beam sources (2a-2c) which emit laser beams (5a-5c) of different wavelengths, with associated beam imaging means (3a-3c), to configure appropriately the beam paths of each associated laser beam (5a-5c), a beam superposition device (6), to overlay the laser beams (5a-5c) on each other, and imaging optics (8), to image the overlaid laser beams (5a-5c) onto a workpiece (12) so that respective focal points are associated with the laser beams (5a-5c) in the focus of the imaging optics (8) on the workpiece (12), wherein the beam imaging means image the laser beams (5a-5c) onto the respective focal points in a predefined arrangement which can be varied by means of the beam imaging means (3a-3c).