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A generalized technique of two-wavelength, nondiffuse holographic interferometry is developed for use with transparent experimental media. It is shown that a single pair of nondiffuse transmission holograms recorded simultaneously at different wavelengths can be reconstructed so as to produce a large number of interferograms with widely varying sensitivities. For ease in interpretation, these interferograms can have either an infinite-fringe background or a multiple-fringe background with any desired fringe orientation and spacing.
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F. Weigi (1971) studied this question.
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