Trumpf Laser Gmbh

Tobias Barnowski

Alexander Killi

Christoph Tillkorn

Thilo Vethake

Steffen Ried

Viorel C Negoita

Stephan Strohmaier

Yufeng Li

Haiyan An

A device for wavelength coupling of laser beams () with different wavelengths (&#x3bb;, . . . &#x3bb;), comprising: at least one laser source for generating a plurality of laser beams (), and an overlapping device for spatial overlapping of the plurality of laser beams () for forming an overlapped laser beam with a plurality of wavelengths (&#x3bb;. . . &#x3bb;). The device has a feedback device arranged between the laser source and the overlapping device for feeding a radiation proportion of the laser beams () to be overlapped back to the laser source, the feedback device comprising a partially reflecting angle-dispersive optical element, in particular a partially reflecting diffraction grating. The overlapping device may, for example, be configured as a transmitting or reflecting diffraction grating whose optical properties are adapted to the optical properties of the partially reflecting diffraction grating to overlap the laser beams () in an essentially dispersion-free manner.

Device for wavelength combining of laser beams

Growing community of inventors

Cranbury, NJ, United States of America

Tobias Barnowski