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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 30, Iss. 9 — Sep. 1, 2013
  • pp: 1760–1767

Optical schemes for speckle suppression by Barker code diffractive optical elements

A. Lapchuk, A. Kryuchyn, V. Petrov, O. V. Shyhovets, G. A. Pashkevich, O. V. Bogdan, A. Kononov, and A. Klymenko  »View Author Affiliations


JOSA A, Vol. 30, Issue 9, pp. 1760-1767 (2013)
http://dx.doi.org/10.1364/JOSAA.30.001760


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Abstract

A method for speckle suppression based on Barker code and M-sequence code diffractive optical elements (DOEs) is analyzed. An analytical formula for the dependence of speckle contrast on the wavelength of the laser illumination is derived. It is shown that speckle contrast has a wide maximum around the optimal wavelength that makes it possible to obtain large speckle suppression by using only one DOE for red, green, and blue laser illumination. Optical schemes for implementing this method are analyzed. It is shown that the method can use a simple liquid-crystal panel for phase rotation instead of a moving DOE; however, this approach requires a high frequency of liquid-crystal switching. A simple optical scheme is proposed using a 1D Barker code DOE and a simple 1D liquid-crystal panel, which does not require a high frequency of liquid-crystal switching or high-accuracy DOE movement.

© 2013 Optical Society of America

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

ToC Category:
Imaging Systems

History
Original Manuscript: March 29, 2013
Revised Manuscript: July 18, 2013
Manuscript Accepted: July 18, 2013
Published: August 8, 2013

Citation
A. Lapchuk, A. Kryuchyn, V. Petrov, O. V. Shyhovets, G. A. Pashkevich, O. V. Bogdan, A. Kononov, and A. Klymenko, "Optical schemes for speckle suppression by Barker code diffractive optical elements," J. Opt. Soc. Am. A 30, 1760-1767 (2013)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-30-9-1760

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