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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 3 — Feb. 1, 2010
  • pp: 444–446

Speckle reduction in line-scan laser projectors using binary phase codes

M. Nadeem Akram, Vladimir Kartashov, and Zhaomin Tong  »View Author Affiliations


Optics Letters, Vol. 35, Issue 3, pp. 444-446 (2010)
http://dx.doi.org/10.1364/OL.35.000444


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Abstract

A Barker binary phase code of maximum length 13 has previously been used for speckle reduction in line-scan laser projectors, and a speckle contrast factor decrease down to 13% has been achieved. In this Letter, Barker-like binary phase codes of lengths longer than 13 are used at an intermediate image plane. It is shown by theoretical calculation that a much better speckle reduction with a speckle contrast factor up to 6% can be achieved by using longer binary phase codes other than the Barker code.

© 2010 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(110.6150) Imaging systems : Speckle imaging
(120.2040) Instrumentation, measurement, and metrology : Displays

ToC Category:
Image Processing

History
Original Manuscript: November 16, 2009
Revised Manuscript: December 16, 2009
Manuscript Accepted: December 17, 2009
Published: January 29, 2010

Citation
M. Nadeem Akram, Vladimir Kartashov, and Zhaomin Tong, "Speckle reduction in line-scan laser projectors using binary phase codes," Opt. Lett. 35, 444-446 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-3-444


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