BEAM SHAPING SYSTEM IN THE PROCESS OF LASER WELDING

A beam-shaper for transforming a MM beam with the flattop intensity distribution profile includes an end block which is fused to a downstream end of a fiber outputting the MM beam along a path within a laser head. The beam-shaper further has a collimator mounted to the laser head downstream from the...

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Bibliographic Details
Main Authors GRAPOV, Yuri, NAIR, Nikhit, ZELENCHUK, Alex, MARKUSHOV, Iurii
Format Patent
LanguageEnglish
Published 16.11.2023
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:A beam-shaper for transforming a MM beam with the flattop intensity distribution profile includes an end block which is fused to a downstream end of a fiber outputting the MM beam along a path within a laser head. The beam-shaper further has a collimator mounted to the laser head downstream from the end block. The collimated MM beam is then focused on the working zone with a beam waist characterized by a Gaussian intensity profile. The Gaussian region may be provided in the vicinity of the beam waist by positioning the collimator so that the Gaussian region of the MM flattop beam is located inside the end block and in the focal plane of the collimator. Alternatively, the Gaussian region may be provided within the waist by using a diffractive optical element which transforms the flattop distribution profile into a donut-shaped profile.
Bibliography:Application Number: US202118029423