Abstract

An analysis of holographic interferometry using two reference beams to record and reconstruct the two interfering light fields independently is carried out. The multiplicity of reconstructions is discussed. Guidelines for the recording setup are derived to separate the wanted from the unwanted reconstructions. The influence of misalignment of hologram and reference waves on the fringe pattern in the image is evaluated in detail. It is shown that by proper choice of the experimental arrangement, two-reference-beam holography can safely be used for quantitative measurements of surface displacements.

© 1976 Optical Society of America

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