Melt pool topography obtained with two-wavelength holographic imaging (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Melt pool topography obtained with two-wavelength holographic imaging

Caption

a, (a) Two-wavelength holographic set-up for LBM monitoring, (b) laser fabrication machine (BE1-3: beam expanders, PBS1-3: polarizing beam splitters, M1-7: mirrors, C1-3: beam splitter cubes, D1: chromatic filter, D2: dichroic plates, W: protection window, L1-2: lenses). b, Key-hole in melt pool on 316L substrate. (a) Bottom view of melt pool with key-hole at 88 ms after the beginning of the recording, (b) bottom view of melt pool with key-hole at 88 ms after the beginning of the recording, (c) Illustration of the Rosenthal key-hole regime (adapted from R. Fabbro, “Developments in nd:yag laser welding,” in Handbook of laser welding technologies, S. Katayama, ed., Woodhead Publishing Series in Electronic and Optical Materials, pp. 47–72, Woodhead Publishing, 2013).

Credit

by Matthieu Piniard, Beatrice Sorrente, Gilles Hug, and Pascal Picart

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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