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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 30, Iss. 2 — Feb. 1, 2013
  • pp: 227–232

Optimal speckle suppression in laser projectors using a single two-dimensional Barker code diffractive optical element

Anatoliy Lapchuk, Andriy Kryuchyn, Vyacheslav Petrov, and Volodymyr Klymenko  »View Author Affiliations

JOSA A, Vol. 30, Issue 2, pp. 227-232 (2013)

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An effective method of speckle suppression using one 2D diffractive optical element (DOE) moving with constant velocity based on the periodic Barker code sequence is developed. We prove that this method has the same optical parameters as the method based on two 1D Barker code DOEs stretched and moving in orthogonal directions. We also show that DOE movement in a special direction allows the full numerical aperture of the objective lens to be used for speckle averaging by angle diversity. It is found that the 2D DOE based on a Barker code of length of 13 allows the speckle contrast to be decreased below the sensitivity of the human eye with optical losses of less than 10%.

© 2013 Optical Society of America

OCIS Codes
(110.1650) Imaging systems : Coherence imaging
(110.6150) Imaging systems : Speckle imaging

ToC Category:
Diffraction and Gratings

Original Manuscript: October 19, 2012
Manuscript Accepted: December 31, 2012
Published: January 16, 2013

Anatoliy Lapchuk, Andriy Kryuchyn, Vyacheslav Petrov, and Volodymyr Klymenko, "Optimal speckle suppression in laser projectors using a single two-dimensional Barker code diffractive optical element," J. Opt. Soc. Am. A 30, 227-232 (2013)

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