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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 24 — Aug. 20, 2011
  • pp: 4779–4787

Automated compensation of misalignment in phase retrieval based on a spatial light modulator

Mostafa Agour, Claas Falldorf, Christoph v. Kopylow, and Ralf B. Bergmann  »View Author Affiliations

Applied Optics, Vol. 50, Issue 24, pp. 4779-4787 (2011)

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In this paper, the issue of misalignment in phase retrieval by means of optical linear filtering is dis cussed. The filtering setup is based on a 4 f configuration with a spatial light modulator (SLM) as an active element, located in the Fourier domain. From the analysis, crucial parameters for the alignment procedure of the setup’s optical axes and the center of the SLM are identified. Furthermore, a method to automatically as well as electronically compensate such effects by modifying the phase pattern displayed on the SLM is introduced. Experimental results are presented that validate the compensation approach.

© 2011 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(100.5070) Image processing : Phase retrieval
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Image Processing

Original Manuscript: April 19, 2011
Revised Manuscript: June 21, 2011
Manuscript Accepted: June 23, 2011
Published: August 15, 2011

Mostafa Agour, Claas Falldorf, Christoph v. Kopylow, and Ralf B. Bergmann, "Automated compensation of misalignment in phase retrieval based on a spatial light modulator," Appl. Opt. 50, 4779-4787 (2011)

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