Interferometric imaging for the tomography of rough particles in a flow: A case study

Marc Brunel (1) , Barbara Delestre (1) , Mohamed Talbi (1) , Michael Fromager (2)

1 CORIA - Complexe de recherche interprofessionnel en aérothermochimie
2 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique

The possibility to perform the tomography of irregularly-shaped rough particles in a flow using multi-view interferometric imaging is investigated. Combining three perpendicular angles of views, we reconstruct a family of possible 3D-shapes from speckle patterns. The estimation of an error parameter enables the elimination of erroneous 3D-shapes to obtain a more accurate estimation of the particle’s volume. The principle is tested and confirmed experimentally by analyzing a set of three interferometric images of “programmable” particles generated by a digital micromirror device.

Mots clés: Interferometric particle imaging; Speckle; Rough particles; Tomography

Domaines: Optique / photonique

Marc Brunel, Barbara Delestre, Mohamed Talbi, Michael Fromager. Interferometric imaging for the tomography of rough particles in a flow: A case study. Optics Communications, 2021, 479, pp.126412. ⟨10.1016/j.optcom.2020.126412⟩. ⟨hal-02944198⟩