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2 November 2011 Phase shifting interferometry by modulation of the electric field module
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A new method for phase-shifting interferometry based on the wave amplitude modulation is proposed and discussed. This proposal is based on the interference of three waves, where two waves attend as two reference waves and the other wave attends as a probe wave. Whereby, three interference terms are obtained, but because of a phase difference of π/2 between the two references is kept constant, one of the three terms will be dropped while the two remaining will be put in quadrature. Under these conditions the resulting pattern is mathematically modeled by an interferogram of two waves, where an additional phase is given by the amplitude variations of the reference waves. In this paper, both a theoretical model and some numerical simulations are presented
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cruz Meneses-Fabian and Uriel Rivera-Ortega "Phase shifting interferometry by modulation of the electric field module", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801128 (2 November 2011);

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