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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 6 — Mar. 15, 2013
  • pp: 812–814

Theoretical analysis for best defocus measurement plane for robust phase retrieval

Alessandro Polo, Silvania F. Pereira, and Paul H. Urbach  »View Author Affiliations

Optics Letters, Vol. 38, Issue 6, pp. 812-814 (2013)

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We study the phase retrieval (PR) technique using through-focus intensity measurements and explain the dependence of PR on the defocus distance. An optimal measurement plane in the out-of-focus region is identified where the intensity distribution on the optical axis drops to the first minimum after focus. Experimental results confirm the theoretical predictions and are in good agreement with an independent phase measurement.

© 2013 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(220.1080) Optical design and fabrication : Active or adaptive optics

ToC Category:
Optical Design and Fabrication

Original Manuscript: January 21, 2013
Manuscript Accepted: January 26, 2013
Published: March 5, 2013

Alessandro Polo, Silvania F. Pereira, and Paul H. Urbach, "Theoretical analysis for best defocus measurement plane for robust phase retrieval," Opt. Lett. 38, 812-814 (2013)

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