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Proceedings Paper

Analysis and minimization of noise effects in phase-shifting interferometry
Author(s): Gonzalo Paez; Marija Strojnik
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Paper Abstract

We perform the analysis of the impact of noise in the phase- shifting interferometry. The effect of the multiplicative noise is equivalent to the (pixel-variable) modulating intensity error, while the additive noise has the two-fold consequences, equivalent to the (pixel-variable) phase-shift error and the modulating intensity error. We evaluate the relative importance of the errors in the background intensity, the modulating intensity, and the phase-shift on the accuracy of the phase recovery. The phase reconstruction process is more sensitive to the phase displacement error than to the intensity error. Finally, we show that the phase reconstruction process is more sensitive to the additive noise than to the multiplicative noise.

Paper Details

Date Published: 13 August 1999
PDF: 11 pages
Proc. SPIE 3744, Interferometry '99: Techniques and Technologies, (13 August 1999); doi: 10.1117/12.357727
Show Author Affiliations
Gonzalo Paez, Ctr. de Investigaciones en Optica (Mexico)
Marija Strojnik, Ctr. de Investigaciones en Optica (Mexico)

Published in SPIE Proceedings Vol. 3744:
Interferometry '99: Techniques and Technologies
Malgorzata Kujawinska; Mitsuo Takeda, Editor(s)

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