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.
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