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Applied Optics

Applied Optics


  • Vol. 37, Iss. 4 — Feb. 1, 1998
  • pp: 753–758

Error-compensating phase-calculation algorithm in rapid-switching double-pulsed holographic interferometry

Brenda H. Timmerman  »View Author Affiliations

Applied Optics, Vol. 37, Issue 4, pp. 753-758 (1998)

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An algorithm is presented for calculating the phase difference that is obtained with rapid-switching, double-pulsed holographic interferometry. Imperfect switching between reference beams in between two laser pulses causes a distortion in the phase-stepped interferograms that results in erroneous phase calculation when conventional phase-calculating algorithms are used. Instead of estimating the error that is involved, an extra step is added to a more conventional algorithm such as Carré’s algorithm, so that this leakage effect is compensated for. Thus the desired phase difference is found. Also, a measure is found for excluding unreliable calculations, based on the light intensities and phase steps for each pixel and the leakage ratios.

© 1998 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Original Manuscript: March 13, 1997
Revised Manuscript: July 21, 1997
Published: February 1, 1998

Brenda H. Timmerman, "Error-compensating phase-calculation algorithm in rapid-switching double-pulsed holographic interferometry," Appl. Opt. 37, 753-758 (1998)

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