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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 17 — Aug. 26, 2013
  • pp: 19568–19578
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Speckle noise suppression in digital holography by angular diversity with phase-only spatial light modulator

Yunxin Wang, Puhui Meng, Dayong Wang, Lu Rong, and Spozmai Panezai  »View Author Affiliations


Optics Express, Vol. 21, Issue 17, pp. 19568-19578 (2013)
http://dx.doi.org/10.1364/OE.21.019568


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Abstract

A speckle noise suppression method in digital holography is proposed by the angular diversity with a phase-only spatial light modulator (SLM). The minimal angular difference of illumination beams is quantitatively analyzed to ensure the noncorrelation of any two speckle patterns, and then the phase-only SLM is employed to generate a series of tilted illumination beams. Comparing with the typical methods, the tilted illumination beams are controlled dynamically and accurately, which makes it possible to record a large number of holograms. Finally, using an image-plane digital holographic system, 117 holograms are recorded respectively, and the synthesized reconstructed images are obtained with the greatly suppressed speckle noise which is in good agreement with the theoretical results. The experimental results demonstrate the effectiveness, repeatability, and practicability of the proposed approach.

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OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(100.2000) Image processing : Digital image processing
(110.0110) Imaging systems : Imaging systems
(090.1995) Holography : Digital holography

ToC Category:
Holography

History
Original Manuscript: May 6, 2013
Revised Manuscript: July 18, 2013
Manuscript Accepted: July 21, 2013
Published: August 13, 2013

Citation
Yunxin Wang, Puhui Meng, Dayong Wang, Lu Rong, and Spozmai Panezai, "Speckle noise suppression in digital holography by angular diversity with phase-only spatial light modulator," Opt. Express 21, 19568-19578 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-17-19568


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