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arXiv · 1505.05203

Singular value demodulation of phase-shifted holograms

Fernando Lopes·Michael Atlan
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Abstract

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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Fernando Lopes, Michael Atlan. 2015-05-19. Singular value demodulation of phase-shifted holograms. https://doi.org/10.1364/ol.40.002541

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