Patent ID: 9690107
Date: 2017-06-27
CPC Classifications: G02B,H01S

Claim:
1. A device for wavelength coupling of laser beams ( 2 a , . . . , 2 n ) with different wavelengths (λ 1 , . . . , λ n ), comprising: at least one laser source for generating a plurality of laser beams ( an overlapping device for spatial overlapping of the plurality of laser beams ( a feedback device arranged in a path of the overlapped laser beam for feeding a radiation proportion of the overlapped laser beam back to the laser source; and a phase correction device for phase correction of the radiation proportion reflected back to the laser source, wherein the feedback device is configured as an output coupling element with a surface partially reflecting the overlapped laser beam, and wherein the partially reflecting surface of the output coupling element has a curvature for the phase correction of the radiation proportion reflected back to the laser source.