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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

  • Vol. 18, Iss. 11 — Nov. 1, 2001
  • pp: 2915–2922

Design concept for diffractive elements shaping partially coherent laser beams

Dirk Schäfer  »View Author Affiliations


JOSA A, Vol. 18, Issue 11, pp. 2915-2922 (2001)
http://dx.doi.org/10.1364/JOSAA.18.002915


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Abstract

A new two-step design algorithm for the calculation of a diffractive phase element (DPE) for use with partially coherent laser beams is presented. The optical reconstruction of the DPE is modeled by the convolution of a coherent diffraction pattern and the far-field intensity distribution of a partially coherent laser beam. Numerical deconvolution is applied to derive a suitable amplitude pattern as signal input to a standard iterative Fourier transform algorithm (IFTA). Theory and numerical results are presented. Compared with a single-step IFTA design, this new approach yields nearly equal diffraction efficiencies and a relative improvement of 15% in signal reconstruction error.

© 2001 Optical Society of America

OCIS Codes
(090.1970) Holography : Diffractive optics
(100.1830) Image processing : Deconvolution

Citation
Dirk Schäfer, "Design concept for diffractive elements shaping partially coherent laser beams," J. Opt. Soc. Am. A 18, 2915-2922 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-11-2915

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