公开(公告)号：US20230170660A1

公开(公告)日：2023-06-01

申请号：US18161904

申请日：2023-01-31

Applicant: TRUMPF Laser GmbH

Inventor： Jonathan Brons ,  Raphael Scelle ,  Dominik Bauer ,  Aleksander Budnicki ,  Alexander Killi ,  Dirk Sutter ,  Peter Kroetz

IPC: H01S3/00 ,  G02F1/35

CPC classification number: H01S3/0057 ,  G02F1/3511 ,  G02F1/3503

Abstract: A laser system for nonlinear pulse compression includes a laser source configured to generate laser pulses with a pulse energy of at least 50 mJ, a spectral broadening device for spectrally broadening the high-energy laser pulses using self-phase modulation, and a compression device including a grating compressor having at least two diffraction gratings and configured to compress the spectrally broadened high-energy laser pulses. The laser system is configured to generate a pulse duration of the high-energy laser pulses of less than 100 fs.

公开(公告)号：US11573379B2

公开(公告)日：2023-02-07

申请号：US17329332

申请日：2021-05-25

Applicant: TRUMPF LASER GMBH

Inventor： Stefan Fuchs ,  Dominik Bauer ,  Michael Scharun ,  Helge Höck ,  Stefan Baumbach ,  Manuel Schindler ,  Maike Proßotowicz

IPC: G02B6/38 ,  C03B37/15 ,  G02B6/032

Abstract: Methods, devices, and systems for welding optical fibers and perforated elements by pulsed laser beam are provided. In one aspect, a method includes focusing a pulsed laser beam onto a region of a joining surface formed by an outer circumference of an optical fiber and an inner circumference of a hole of a perforated element, a beam direction of the pulsed laser beam running in an axial direction of the joining surface, and moving a laser focus of the pulsed laser beam in the region axially in or counter to the beam direction to produce at least one weld seam in the region. The optical fiber and the perforated element are locally melted in the region by the pulsed laser beam focused into a material of the optical fiber and a material of the perforated element and are thereby welded to one another.