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Applied Optics

Applied Optics


  • Vol. 41, Iss. 35 — Dec. 10, 2002
  • pp: 7390–7396

Local improvement of the signal-to-noise ratio for diffractive optical elements designed by unidirectional optimization methods

Martin Meister and Richard J. Winfield  »View Author Affiliations

Applied Optics, Vol. 41, Issue 35, pp. 7390-7396 (2002)

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We present a straightforward method to design multilevel phase-only diffractive optical elements with a locally improved signal-to-noise ratio in the reconstruction. The method is generally applicable to all unidirectional design schemes, such as direct search, simulated annealing, or genetic optimization. As the shape and the location of the desired low noise areas are supplied by a bit map file the method allows for the design of basically any two-dimensional low noise area. The improvement in the signal-to-noise ratio that may be achieved is considerable but also entails reduced diffraction efficiency. The suggested method is applied to different beam-splitter design examples. All examples are calculated with the scalar diffraction approximation in the far field.

© 2002 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1970) Diffraction and gratings : Diffractive optics
(090.1760) Holography : Computer holography

Original Manuscript: May 30, 2002
Revised Manuscript: September 17, 2002
Published: December 10, 2002

Martin Meister and Richard J. Winfield, "Local improvement of the signal-to-noise ratio for diffractive optical elements designed by unidirectional optimization methods," Appl. Opt. 41, 7390-7396 (2002)

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