Trumpf Laser- Und Systemtechnik Gmbh

Trumpf Laser Gmbh

Andreas Heimes

Christoph Tillkorn

Julian Hellstern

Daniel Flamm

Torsten Beck

Maike Prossotowicz

Christian Lingel

Florian Jansen

Thomas Zeller

Michael Jenne

Felix Marschall

Silke Thierfelder

Hans-Juergen Otto

Li-Wen Chang

Christoph Irion

An optical arrangement converts a laser beam into a line-type beam having a line-type beam cross-section that extends along a line direction with a non-vanishing intensity. The arrangement has: reshaping optics having: an input aperture through which the laser beam is radiated in; and an elongate output aperture, the reshaping optics being configured such that the laser beam radiated in is converted into a beam packet with beam segments that emerge through the output aperture; homogenization optics, which contribute to the conversion of the beam packet into the line-type output beam, and by which different beam segments are mixed and superposed along the line direction; and redirection optics configured to redirect the laser beam such that an incidence position/direction of laser beam on the input aperture is changed in dependence on time.

Optical arrangement and laser system

An apparatus for combining a plurality of coherent laser beams includes at least N&#x2212;1 phase setting devices configured to set a respective phase (&#x3b4;&#x3c6;) of a respective one of the plurality of coherent laser beams, and a beam combination device configured to combine the plurality of coherent laser beams to form at least one combined laser beam. The beam combination device includes a microlens arrangement having at least two microlens arrays configured to form the at least one combined laser beam.

Apparatus, laser system and method for combining coherent laser beams

An optical arrangement converts an input laser beam into a line-like output beam, which propagates along a propagation direction and which has, in a working plane, a line-like beam cross section extending along a line direction. The optical system includes: a reshaping optical unit having an input aperture, through which the input laser beam is radiated, and an elongate output aperture, elongatedly extending along an aperture longitudinal direction, the reshaping optical unit converting the input laser beam radiated through the input aperture into a beam packet exiting through the output aperture; and a homogenization optical unit which converts the beam packet into the line-like output beam, different beam segments of the beam packet being intermixed and superimposed along the line direction. The aperture longitudinal direction extends in a manner rotated about the propagation direction by a non-vanishing angle of rotation with respect to the line direction.

An optical assembly includes a beam path, passing, in succession, through multiple microlens arrays and a Fourier lens assembly. The microlens arrays have a uniform aperture of their microlenses, and the entirety of the microlens arrays has an effective focal length. The optical assembly further includes an adjustment mechanism, configured to adjust a mutual optical distance of at least some of the microlens arrays in the beam path, thereby setting the effective focal length of the entirety of the microlens arrays. The adjustment mechanism has multiple adjustment positions i=1, . . . , M wherein M is a natural number &#x2265;2, i is an adjustment position index, at which the term in each case essentially smoothly results in a natural number Ni. &#x3bb; is a center wavelength, fML,i is an effective focal length fML of the entirety of the microlens arrays set by the adjustment position i.

Optical assembly for variably generating a multi-focus profile

Growing community of inventors

Renningen, Germany

Andreas Heimes