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oai:docta.ucm.es:20.500.14352/439772023-08-26T00:49:22Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Quiroga Mellado, Juan Antonio author Estrada, Julio César author Servín Guirado, Manuel author Mosiño, Juan Francisco author Cywiak Garbarcewics, Moisés author 2009-05-25 We present a theoretical analysis to estimate the amount of phase noise due to noisy interferograms in Phase Shifting Interferometry (PSI). We also analyze the fact that linear filtering transforms corrupting multiplicative noise in Electronic Speckle Pattern Interferometry (ESPI) into fringes corrupted by additive gaussian noise. This fact allow us to obtain a formula to estimate the standard deviation of the noisy demodulated phase as a function of the spectral response of the preprocessing spatial filtering combined with the PSI algorithm used. This phase noise power formula is the main result of this contribution. 1094-4087 10.1364/OE.17.008789 https://hdl.handle.net/20.500.14352/43977 http://dx.doi.org/10.1364/OE.17.008789 http://www.opticsinfobase.org Noise in phase shifting interferometry