https://doi.org/10.1051/epjconf/20100630004
Investigation of dynamic of unconsolidated materials using two-color digital holography
1
LAUM CNRS, Université du Maine, Avenue Olivier Messiaen,
72085
LE MANS Cedex 9,
France
2
École Nationale Supérieure d’Ingénieurs du Mans,
rue Aristote,
72085
Le Mans Cedex 9,
France
3
LPEC CNRS, Université du Maine, Avenue Olivier Messiaen,
72085
LE MANS Cedex 9,
France
a e-mail: patrice.tankam.etu@univ-lemans.fr
The paper presents a two-color digital holographic interferometer. The set-up is devoted to the study of the fundamental dynamic of unconsolidated materials. Optical configuration and algorithms to recover the optical phase of two-color digitally encoded holograms are described. The method is based on a spatial-color-multiplexing scheme in which holographic reconstruction is performed using adapted wavelength zero-padding and reconstructing distance. Experimental results are presented in the case of granular media excited in the frequency range 400Hz-3000Hz and exhibits the 3D movement.
© Owned by the authors, published by EDP Sciences, 2010
