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Applied Optics

Applied Optics


  • Vol. 27, Iss. 22 — Nov. 15, 1988
  • pp: 4731–4734

Universal digital speckle shearing interferometer

A. R. Ganesan, D. K. Sharma, and M. P. Kothiyal  »View Author Affiliations

Applied Optics, Vol. 27, Issue 22, pp. 4731-4734 (1988)

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A speckle shear interferometer is presented which can be used to yield lateral, radial, rotational, and inversion shear fringes in real time in conjunction with a digital image processing system. A modification of the optical arrangement yields reversal or folding shear as well. Experiments are conducted on an edge-clamped diaphragm with concentrated load. Unit contrast fringes have been obtained by resorting to nonlinear processing techniques such as level slicing. The results are presented for various types of shear.

© 1988 Optical Society of America

Original Manuscript: November 24, 1987
Published: November 15, 1988

A. R. Ganesan, D. K. Sharma, and M. P. Kothiyal, "Universal digital speckle shearing interferometer," Appl. Opt. 27, 4731-4734 (1988)

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