Investigation of dynamic of unconsolidated materials using two-color digital holography

P.  Tankam; P. Picart; D. Mounier; J.-P. Boileau; V. Tournat; V. Gusev

doi:10.1051/epjconf/20100630004

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 6, 30004 (2010)
https://doi.org/10.1051/epjconf/20100630004

Investigation of dynamic of unconsolidated materials using two-color digital holography

P. Tankam¹^a, P. Picart¹^,2, D. Mounier²^,3, J.-P. Boileau², V. Tournat¹ and V. Gusev¹^,3

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

Abstract

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.

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