Abstract

Further modification is proposed of the Talbot interferometer configuration for obtaining moire fringe shearing interferograms with increased shear. The configuration is described with the beam splitter grating rotated about the axis parallel to its lines. The second grating detects only one two-beam interference pattern at a particular angular setting of the beam splitter grating from its multiple beam interference field. This significantly reduces the low quality of the Talbot interferograms at large shear values.

© 1986 Optical Society of America

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