Speckle-Tracking Point Diffraction Interferometer For Fluid Studies

M. Giglio; U. Perini; E. Paganini

doi:10.1117/12.7977911

1 March 1988 Speckle-Tracking Point Diffraction Interferometer For Fluid Studies

M. Giglio, U. Perini, E. Paganini

Author Affiliations +

Optical Engineering, Vol. 27, Issue 3, 273197 (March 1988). https://doi.org/10.1117/12.7977911

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.

Citation Download Citation

M. Giglio, U. Perini, and E. Paganini "Speckle-Tracking Point Diffraction Interferometer For Fluid Studies," Optical Engineering 27(3), 273197 (1 March 1988). https://doi.org/10.1117/12.7977911

Published: 1 March 1988

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