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Spectral analysis of phase shifting algorithms

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Quiroga Mellado, Juan Antonio and Estrada, Julio César and Servín Guirado, Manuel (2009) Spectral analysis of phase shifting algorithms. Optics Express, 17 (19). pp. 16423-16428. ISSN 1094-4087

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Official URL: http://dx.doi.org/10.1364/OE.17.016423


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Abstract

Systematic spectral analysis of Phase Shifting Interferometry (PSI) algorithms was first proposed in 1990 by Freischlad and Koliopoulos (F&K). This analysis was proposed with the intention that "in a glance" the main properties of the PSI algorithms would be highlighted. However a major drawback of the F&K spectral analysis is that it changes when the PSI algorithm is rotated or its reference signal is time-shifted. In other words, the F&K spectral plot is different when the PSI algorithm is rotated or its reference is time-shifted. However, it is well known that these simple operations do not alter the basic phase demodulation properties of PSI algorithms, except for an unimportant piston. Here we propose a new way to analyze the spectra of PSI algorithms which is invariant to rotation and/or reference time-shift among other advantages over the nowadays standard PSI spectral analysis by F&K.


Item Type:Article
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© 2009 Optical Society of America.
We acknowledge the valuable support of the Mexican Science Council, CONACYT.

Uncontrolled Keywords:Interferometry
Subjects:Sciences > Physics > Optics
ID Code:22809
Deposited On:16 Sep 2013 11:55
Last Modified:07 Feb 2014 10:52

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