Trumpf Laser Gmbh

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Friedrich-schiller-universitaet Jena

Friedrich-schiller-universitat Jena

Florian Jansen

Aleksander Budnicki

Jens Limpert

Rainer Flaig

Andreas Enzmann

Fabian Stutzki

Alexander Killi

Daniel Flamm

Andreas Tuennermann

Christoph Tillkorn

Andreas Tünnermann

César Jáuregui Misas

Martin Liermann

Julian Hellstern

Torsten Beck

Andreas Heimes

Tino Eidam

Dirk Sutter

César Jauregui Misas

Maike Prossotowicz

Oliver Rapp

Daniel Glunk

Johannes Overbuschmann

Hans-Jürgen Otto

Hans-Juergen Otto

A beam shutter is for a laser beam. The beam shutter includes: a reflecting optical unit configured to deflect the laser beam; a holding arm, which is capable of being brought into a release position and a shut-off position and on which the reflecting optical unit is held; a sensor circuit with at least one sensor component arranged between the reflecting optical unit and the holding arm; and an evaluation device, which is configured to interact with the sensor circuit, at least in the shut-off position of the holding arm.

Beam shutter, laser arrangement and operating method for a laser arrangement

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

In methods and devices for generating a laser pulse of an excitation laser that is actuated by a driver in response to a triggering time of a trigger signal, the driver actuation signal is generated taking into account the time interval between the triggering time and a preceding triggering time.

Methods for producing a laser pulse and devices for producing a driver control signal

A fiber amplification system is provided for amplifying a laser pulse signal, e.g., an oscillator signal of an oscillator device. The fiber amplification system includes a fiber pre-amplification system having a short, fundamental-mode and step-index fiber configured to pre-amplify the laser pule signal to generate a seed signal and a main amplification system having a large core fiber configured to amplify the seed signal. The short, fundamental-mode step-index fiber can have a length no longer than about 30 cm, and a mode field diameter no less than about 30 &#x3bc;m, e.g., in a range from 30 &#x3bc;m to 60 &#x3bc;m, as well as a high doping concentration needed to provide an absorption length no more than about 30 cm, for providing the seed signal for the large core fiber with low non-linearity.

Ultra short pulse fiber pre-amplifier system for large-core fibers

Fiber mounting units for supporting an optical fiber for fiber laser systems are disclosed and include a base body having a fiber end attachment section, a fiber guide section, and a connection section arranged between the fiber end attachment section and the fiber guide section. The fiber end attachment section is adapted to attach a receiving element, which holds a fiber end portion of the optical fiber, the fiber guide section is adapted to guide a fiber central portion of the optical fiber, and the connection section is configured as a flexure bearing between the fiber end attachment section and the fiber guide section.

Fiber mounting units and fiber receiving elements

The invention relates to a method and corresponding devices for reducing mode instability in an optical waveguide (), a light signal becoming unstable in the optical waveguide () beyond an output power threshold and energy being transformed from a basic mode into higher order modes. The invention proposes a reduction in temperature variation () along the optical waveguide () and/or a reduction in changes in the optical waveguide () that are caused by spatial temperature variation as a result of mode interference.

Method and device for reducing mode instability in an optical waveguide

The invention relates to a double-sheath fiber having a core region () and a sheath region, the sheath region having an inner region () and an outer region (), which comprises a refractive index that is lower with respect to that of the inner region () and the core region (), wherein the outer region () surrounds the inner region (). The invention proposes an internal structure () of the inner region () which effects a spatial overlap of modes of higher order with the core region (), which is lower than the spatial overlap of a fundamental mode with the core region ().

Structured double-sheath fiber

Growing community of inventors

Villingen-Schwenningen, Germany

Florian Jansen