Global shutter depth profiling of molten pool and keyhole during laser processing using core-array fiber
Yaoyu Ding,
Mingpu Yao,
Chenguang Lei
et al.
Abstract:Online 3D depth profiling of molten pool/keyhole during laser processing is of great importance to evaluate the metrics of the live process. The indirect methods based on visual image and thermal radiation suffer low correlations with pool/keyhole behavior, thus the accuracy is typically low. Optical coherence tomography (OCT) shoots a light probe coaxially with the processing beam into the pool/keyhole, hence being able to provide a direct depth measurement. When it comes to profiling the depth of an area, a … Show more
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