The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2017
Filed:
Mar. 15, 2013
Trumpf Laser Gmbh, Schramberg, DE;
Viorel C. Negoita, Plainsboro, NJ (US);
Thilo Vethake, Cranbury, NJ (US);
Alexander Killi, Trossingen, DE;
Christoph Tillkorn, Villingendorf, DE;
Stephan Strohmaier, Berlin, DE;
Steffen Ried, Rottweil, DE;
Yufeng Li, Plainsboro, NJ (US);
Haiyan An, Plainsboro Township, NJ (US);
Tobias Barnowski, Cranbury, NJ (US);
TRUMPF LASER GMBH, Schramberg, DE;
Abstract
A device for wavelength coupling of laser beams () with different wavelengths (λ, . . . λ), 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 (λ. . . λ). 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.