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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 24 — Dec. 2, 2013
  • pp: 29205–29216

Minimized speckle noise in lens-less holographic projection by pixel separation

Michal Makowski  »View Author Affiliations

Optics Express, Vol. 21, Issue 24, pp. 29205-29216 (2013)

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Images displayed by holographic methods on phase-only light modulators inevitably suffer from speckle noise. It is partly caused by multiple uncontrolled interferences between laser light rays forming adjacent pixels of the image while having a random phase state. In this work the experimental proof of concept of an almost speckle-less projection method is presented, which assumes introducing a spatial separation of the image pixels, thus eliminating the spurious interferences. A single displayed sub-frame consists of separated light spots of very low intensity error. The sub-frames with different sampling offsets are then displayed sequentially to produce a non-fragmented color final image.

© 2013 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(090.2870) Holography : Holographic display
(090.1705) Holography : Color holography
(090.5694) Holography : Real-time holography

ToC Category:

Original Manuscript: September 13, 2013
Revised Manuscript: October 15, 2013
Manuscript Accepted: October 23, 2013
Published: November 18, 2013

Michal Makowski, "Minimized speckle noise in lens-less holographic projection by pixel separation," Opt. Express 21, 29205-29216 (2013)

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