Open AccessModeling of speckle decorrelation in digital Fresnel holographic interferometry
Author(s) -
Erwan Meteyer,
Félix Foucart,
Charles Pézerat,
Pascal Picart
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.438346
Subject(s) - decorrelation , speckle pattern , optics , holography , speckle noise , electronic speckle pattern interferometry , speckle imaging , holographic interferometry , coherence (philosophical gambling strategy) , interferometry , physics , shearography , computer science , computer vision , quantum mechanics
This paper presents analytical modeling of the speckle decorrelation noise in digital Fresnel holographic interferometry. The theoretical analysis is carried out by considering the complex coherence factor between two speckled images from two digitally reconstructed holograms at two different instants. The expression giving the modulus of the coherence factor is established and depends on the local surface deformation and parameters from the holographic setup. The analysis is supported by realistic simulations and experiments. Both simulations and experimental results exhibit a very good agreement with the theoretical prediction.