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Optical Engineering

Speckle-Tracking Point Diffraction Interferometer For Fluid Studies
Author(s): M. Giglio; U. Perini; E. Paganini
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Paper Abstract

We describe a point diffraction interferometer (PDI) for use in connection with stressed fluids. Since the wavefront distortions are conspicuous, the transmitted field breaks down into a speckle distribution. A speckle chaser has been devised so that a bright speckle is always kept on top of the PDI pinhole. Adequate power for the selfgenerated reference beam is thus available, and fringe visibility remains quite satisfactory even for large optical distortions.

Paper Details

Date Published: 1 March 1988
PDF: 3 pages
Opt. Eng. 27(3) doi: 10.1117/12.7977911
Published in: Optical Engineering Volume 27, Issue 3
Show Author Affiliations
M. Giglio, University of Milan (Italy)
U. Perini, CISE SpA (Italy)
E. Paganini, CISE SpA (Italy)


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