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Applied Optics

Applied Optics


  • Vol. 37, Iss. 26 — Sep. 10, 1998
  • pp: 6262–6269

In-line digital holographic interferometry

Giancarlo Pedrini, Philipp Fröning, Henrik Fessler, and Hans J. Tiziani  »View Author Affiliations

Applied Optics, Vol. 37, Issue 26, pp. 6262-6269 (1998)

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An optical system based on in-line digital holography for the evaluation of deformations is described. In-line holograms are recorded on a CCD chip. The problem of overlapping twin images typical for the in-line arrangement is solved by digital reconstruction and filtering of the unwanted wave fronts. Two separate interferograms of an object under test in its undeformed and deformed states are recorded each on a CCD chip. The phases of the two wave fronts are obtained from the complex amplitudes of the digital reconstructed wave fronts, and the deformation is calculated from the phase differences. Experimental results are presented.

© 1998 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.2590) Fourier optics and signal processing : ABCD transforms
(090.0090) Holography : Holography
(090.1760) Holography : Computer holography
(090.2880) Holography : Holographic interferometry
(100.0100) Image processing : Image processing
(100.2000) Image processing : Digital image processing
(100.2650) Image processing : Fringe analysis

Original Manuscript: December 5, 1997
Revised Manuscript: May 12, 1998
Published: September 10, 1998

Giancarlo Pedrini, Philipp Fröning, Henrik Fessler, and Hans J. Tiziani, "In-line digital holographic interferometry," Appl. Opt. 37, 6262-6269 (1998)

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