Share Email Print
cover

Proceedings Paper

Optimal 3D beam forming
Author(s): Gal Shabtay; Uriel Levy; David Mendlovic; Zeev Zalevsky; Emanuel Marom
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A beam propagating in free space is exposed to the laws of diffraction, which tend to deform the wave front. Hence, 3D beam forming is a very applicable task. For instance it may be useful in designing a special beam to be used for scanning purposes, beam forming for optical communication modules and 3D beam forming as a tool to exceed system's resolving power. There are several techniques, which allow obtaining a reduced sensitivity to diffraction in a pre- determined region of propagation. In this paper a novel optimal technique is suggested. Using the calculus of variation method we derive an analytic expression for an optimal filter in the mean square error sense, to obtain a 3D beam forming, which is as close as possible to the desired 3D distribution. We applied the proposed method for obtaining a scanning beam with improved performances. The suggested approach was tested in computer simulations as well as in optical experiments and was proven to deliver improved performance. Thus one can obtain an extended working region using the resulting beam with confined lateral spread.

Paper Details

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.355023
Show Author Affiliations
Gal Shabtay, Tel Aviv Univ. (Israel)
Uriel Levy, Tel Aviv Univ. (Israel)
David Mendlovic, Tel Aviv Univ. (Israel)
Zeev Zalevsky, Tel Aviv Univ. (Israel)
Emanuel Marom, Tel Aviv Univ. (Israel)


Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)

© SPIE. Terms of Use
Back to Top