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Applied Optics

Applied Optics


  • Vol. 43, Iss. 12 — Apr. 20, 2004
  • pp: 2439–2442

Electronic speckle pattern shearing interferometer with a photopolymer holographic grating

Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, and Vincent Toal  »View Author Affiliations

Applied Optics, Vol. 43, Issue 12, pp. 2439-2442 (2004)

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A photopolymer holographic grating is used to produce the two sheared images in an electronic speckle pattern shearing interferometer. A ground glass screen following the grating eliminates unwanted diffraction orders and removes the requirement for the CCD camera to resolve the diffraction grating’s pitch. The sheared images on the ground glass are further imaged onto the CCD camera. The fringe pattern contrast was estimated to be above 90%. A validation of the system was done by comparing the theoretical phase difference distribution with the experimental data from the three-point bending test.

© 2004 Optical Society of America

OCIS Codes
(090.7330) Holography : Volume gratings
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

Original Manuscript: June 4, 2003
Revised Manuscript: February 13, 2004
Published: April 20, 2004

Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, and Vincent Toal, "Electronic speckle pattern shearing interferometer with a photopolymer holographic grating," Appl. Opt. 43, 2439-2442 (2004)

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