Influence of laser beam intensity maxima and their relative positions on the keyhole during multi-beam laser deep penetration welding

2026-04-17

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M. Möbus *

Ronald Pordzik

Thomas Seefeld

Peer Woizeschke

DOI：10.1016/j.jmatprotec.2026.119323

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• New insights into keyhole manipulation by an additional localized intensity maximum • Novel possibilities for a targeted keyhole shape/behavior modification • OCT-based measurement of three-dimensional averaged keyhole shapes • Targeted positioning of the additional single-mode beam by OCT monitoring • High-speed video-based image tracking of keyhole openings and spatter formations

Keywords:

keyhole manipulation

laser beam intensity

multi-beam laser welding

OCT measurement

keyhole shape control

Influence of laser beam intensity maxima and their relative positions on the keyhole during multi-beam laser deep penetration welding

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