Article Dans Une Revue Optics Letters Année : 2015

Singular-value demodulation of phase-shifted holograms

Résumé

We report on phase-shifted holographic interferogram demodulation by singular value decomposition. Numerical processing of optically-acquired interferograms over several modulation periods was performed in two steps : 1- rendering of off-axis complex-valued holograms by Fresnel transformation of the interferograms; 2- eigenvalue spectrum assessment of the lag-covariance matrix of hologram pixels. Experimental results in low-light recording conditions were compared with demodulation by Fourier analysis, in the presence of random phase drifts.

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hal-01386365 , version 1 (23-10-2016)

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Fernando Lopes, Michael Atlan. Singular-value demodulation of phase-shifted holograms. Optics Letters, 2015, 40, pp.2541 - 2541. ⟨10.1364/OL.40.002541⟩. ⟨hal-01386365⟩
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