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Appl Opt. 2008 Apr 10;47(11):1757-66.

Noise and aliases in off-axis and phase-shifting holography.

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  • 1Laboratoire Kastler-Brossel, Laboratoire de Physique de l'Ecole Normale Sup√©rieure, Centre National de la Recherche Scientifique UMR 8552, Universit√© Pierre et Marie Curie, 24 rue Lhomond 75231 Paris cedex 05, France. gross@lkb.ens.fr

Abstract

We have compared the respective efficiencies of off-axis and phase-shifting holography in terms of noise and aliases removal. The comparison is made by analyzing holograms of a USAF target backlit with laser illumination, recorded with a charge-coupled device camera. We show that it is essential to remove the local oscillator beam noise, especially at low illumination levels.

PMID:
18404173
[PubMed]
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