Optical EngineeringAnalysis of the Fresnel field of a double diffraction system in the case of two amplitude diffraction gratings under partially coherent illumination
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A theoretical analysis of the Fresnel field observed behind one or two binary amplitude gratings with different transmission parameters illuminated by a beam that is in part spatially and temporally coherent is presented. A mathematical model of the moire´-fringe-based optoelectronic transducer is developed. Suggestions for the design of a transducer with reduced manufacturing tolerances are presented and experimentally corroborated.