Multiple phase-shifted interferograms obtained from a single interferogram with linear carrier |
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Authors: | José A Ferrari Erna M Frins |
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Institution: | Instituto de Física, Facultad de Ingeniería J. Herrera y Reissig 565, 11300 Montevideo, Uruguay |
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Abstract: | In this paper we propose a new method for phase retrieval in an interferogram with a spatial linear carrier. We demonstrate that from the primary interferogram one can extract multiple interferograms (with lower resolution than the original one) with arbitrary phase-shift amounts between them. Then, by applying well-known phase-shifting algorithms, from these phase-shifted interferograms the phase can be retrieved. The method does not require sophisticated data-processing and is computationally efficient. Numerical simulations and validation experiments are presented. |
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Keywords: | 42 25 Hz 42 30 Rx |
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