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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 2088–2090

Enhanced deterministic phase retrieval using a partially developed speckle field

Percival F. Almoro, Laura Waller, Mostafa Agour, Claas Falldorf, Giancarlo Pedrini, Wolfgang Osten, and Steen G. Hanson  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 2088-2090 (2012)
http://dx.doi.org/10.1364/OL.37.002088


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Abstract

A technique for enhanced deterministic phase retrieval using a partially developed speckle field (PDSF) and a spatial light modulator (SLM) is demonstrated experimentally. A smooth test wavefront impinges on a phase diffuser, forming a PDSF that is directed to a 4f setup. Two defocused speckle intensity measurements are recorded at the output plane corresponding to axially-propagated representations of the PDSF in the input plane. The speckle intensity measurements are then used in a conventional transport of intensity equation (TIE) to reconstruct directly the test wavefront. The PDSF in our technique increases the dynamic range of the axial intensity derivative for smooth phase objects, resulting in a more robust solution to the TIE. The SLM setup enables a fast and accurate recording of speckle intensity. Experimental results are in good agreement with those obtained using the iterative phase retrieval and digital holographic methods of wavefront reconstruction.

© 2012 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(030.6140) Coherence and statistical optics : Speckle
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.5070) Image processing : Phase retrieval
(230.6120) Optical devices : Spatial light modulators
(090.1995) Holography : Digital holography

ToC Category:
Optical Devices

History
Original Manuscript: February 27, 2012
Manuscript Accepted: April 15, 2012
Published: May 30, 2012

Citation
Percival F. Almoro, Laura Waller, Mostafa Agour, Claas Falldorf, Giancarlo Pedrini, Wolfgang Osten, and Steen G. Hanson, "Enhanced deterministic phase retrieval using a partially developed speckle field," Opt. Lett. 37, 2088-2090 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-2088

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