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Article Dans Une Revue Optics Express Année : 2015

Quantitative phase imaging in flows with high resolution holographic diffraction grating

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Résumé

This paper proposes quantitative phase imaging by using a high resolution holographic grating for generating a four-wave shearing interferogram. The high-resolution holographic grating is designed in a " kite " configuration so as to avoid parasitic mixing of diffraction orders. The selection of six diffraction orders in the Fourier spectrum of the interferogram allows reconstructing phase gradients along specific directions. The spectral analysis yields the useful parameters of the reconstruction process. The derivative axes are exactly determined whatever the experimental configurations of the holographic grating. The integration of the derivative yields the phase and the optical thickness. Demonstration of the proposed approach is carried out for the case of the analysis of the supersonic flow of a small vertical jet, 5.56mm in diameter. The experimental results compared with those obtained with digital holography exhibit a very good agreement.
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Dates et versions

hal-01232405 , version 1 (23-11-2015)

Identifiants

Citer

J.M. Desse, Pascal Picart, F. Olchewsky. Quantitative phase imaging in flows with high resolution holographic diffraction grating. Optics Express, 2015, 23 (18), p. 23726-23737. ⟨10.1364/OE.23.023726⟩. ⟨hal-01232405⟩
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