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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 16 — Aug. 15, 2009
  • pp: 2396–2398

Estimation of phase derivatives using discrete chirp-Fourier-transform-based method

Sai Siva Gorthi and Pramod Rastogi  »View Author Affiliations

Optics Letters, Vol. 34, Issue 16, pp. 2396-2398 (2009)

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Estimation of phase derivatives is an important task in many interferometric measurements in optical metrology. This Letter introduces a method based on discrete chirp-Fourier transform for accurate and direct estimation of phase derivatives, even in the presence of noise. The method is introduced in the context of the analysis of reconstructed interference fields in digital holographic interferometry. We present simulation and experimental results demonstrating the utility of the proposed method.

© 2009 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(090.1995) Holography : Digital holography

ToC Category:

Original Manuscript: April 23, 2009
Revised Manuscript: June 9, 2009
Manuscript Accepted: July 7, 2009
Published: August 4, 2009

Sai Siva Gorthi and Pramod Rastogi, "Estimation of phase derivatives using discrete chirp-Fourier-transform-based method," Opt. Lett. 34, 2396-2398 (2009)

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