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30 May 2003 Simple polarization phase shifting for scatterplate interferometry
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Simple polarized light implementation of the phase shifting method for analyzing fringe patterns formed in Burch's common-path scatterplate interferometer has been proposed. The systems employs circularly polarized beam at the input end, a quarter wave plate to change the rotation direction of circular polarization of the reference beam, and a rotating analyzer placed in two counter-rotating circular polarization beams at the output of the interferometer. The simplicity of our approach is proved theoretically and experimentally. Problems related to non-ideal light modulation at the interferometer output and the ways to overcome them are discussed.
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Krzysztof Patorski and Leszek A. Salbut "Simple polarization phase shifting for scatterplate interferometry", Proc. SPIE 5144, Optical Measurement Systems for Industrial Inspection III, (30 May 2003);

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