Singular value demodulation of phase-shifted holograms
Optics
2015-05-21 v1
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.
Keywords
Cite
@article{arxiv.1505.05203,
title = {Singular value demodulation of phase-shifted holograms},
author = {Fernando Lopes and Michael Atlan},
journal= {arXiv preprint arXiv:1505.05203},
year = {2015}
}
Comments
4 pages, 3 figures