Controlling laser processing via optical coherence topography

F. Dorsch; W. Dubitzky; J.-P. Hermani; A. Hromadka; T. Hesse; T. Notheis; M. Stambke

doi:10.1117/12.2509630

27 February 2019 Controlling laser processing via optical coherence topography

F. Dorsch, W. Dubitzky, J.-P. Hermani, A. Hromadka, T. Hesse, T. Notheis, M. Stambke

Proceedings Volume 10911, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VIII; 109110G (2019) https://doi.org/10.1117/12.2509630
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Scanning optical coherence topography (OCT) is a 3D imaging technique based on low-coherence interferometry. In recent days, it became a key technology in laser processing. The OCT probe beam is coupled co-axially to the laser beam into the processing optics and provides depth information of the probe. Additional information is obtained when the OCT beam is deflected using a small field scanner attached to the processing optics. This report will present manifold applications for OCT process control, ranging from monitoring the weld depth during the welding process, tracking joints in laser remote fillet welding, or localizing the position of pins in three dimensions for precise positioning of the laser beam.

Citation Download Citation

F. Dorsch, W. Dubitzky, J.-P. Hermani, A. Hromadka, T. Hesse, T. Notheis, and M. Stambke "Controlling laser processing via optical coherence topography", Proc. SPIE 10911, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VIII, 109110G (27 February 2019); https://doi.org/10.1117/12.2509630

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