Trumpf Laser Gmbh

Trumpf Photonics, Inc.

Haiyan An

Alexander Killi

Christoph Tillkorn

Thilo Vethake

Viorel C Negoita

Steffen Ried

Stephan Strohmaier

Yufeng Li

Tobias Barnowski

Qiang Zhang

Hans Georg Treusch

Methods of passivating at least one facet of a multilayer waveguide structure can include: cleaning, in a first chamber of a multi-chamber ultra-high vacuum (UHV) system, a first facet of the multilayer waveguide structure; transferring the cleaned multilayer waveguide structure from the first chamber to a second chamber of the multi-chamber UHV system; forming, in the second chamber, a first single crystalline passivation layer on the first facet; transferring the multilayer waveguide structure from the second chamber to a third chamber of the multi-chamber UHV system; and forming, in the third chamber, a first dielectric coating on the first single crystalline passivation layer, in which the methods are performed in an UHV environment of the multi-chamber UHV system without removing the multilayer waveguide structure from the UHV environment.

Passivation of laser facets and systems for performing the same

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

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Plainsboro Township, NJ, United States of America

Haiyan An