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Proceedings Paper

Diffractive optic elements for forming scanning beams
Author(s): Emanuel Marom; David Mendlovic; Naim Konforti; Joseph Katz; Chinh Tan
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Paper Abstract

A novel approach for designing quasi non-diffracting beams is presented. When using these beams for scanning images, the resulting signals have low contrast levels that are maintained over distances far exceeding depth-of-focus distances obtainable with Gaussian beams. A system using two phase-only diffractive optics filters separated by a free space region is sufficient to generate such beams. Gerchberg-Saxton algorithms are applied for determining the phase functions necessary for transforming the input laser beam into the desired beam distribution. The characteristics of the beams are presented.

Paper Details

Date Published: 15 May 1997
PDF: 8 pages
Proc. SPIE 3010, Diffractive and Holographic Device Technologies and Applications IV, (15 May 1997); doi: 10.1117/12.274441
Show Author Affiliations
Emanuel Marom, Tel Aviv Univ. (Israel)
David Mendlovic, Tel Aviv Univ. (Israel)
Naim Konforti, Tel Aviv Univ. (Israel)
Joseph Katz, Symbol Technologies, Inc. (United States)
Chinh Tan, Symbol Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 3010:
Diffractive and Holographic Device Technologies and Applications IV
Ivan Cindrich; Sing H. Lee, Editor(s)

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