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Proceedings Paper

Rectangular focus spots with uniform intensity profile formed by computer-generated holograms
Author(s): Jens Hossfeld; Erwin Jaeger; Theo T. Tschudi; Evgeny G. Churin; Voldemar Petrovich Koronkevich
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Paper Abstract

An optical beam shaping system based on a single Computer Generated Hologram has been realized. It focuses a laser beam with Gaussian profile to a square area with uniform intensity. In order to achieve a rectangular focal spot which is as close as possible to the size of the diffraction spot, we investigated two different hologram calculation methods. The first is based on a ray tracing approach, while the second one uses an iterative Fourier transform algorithm. Computer simulations and experimental results are shown.

Paper Details

Date Published: 1 October 1991
PDF: 8 pages
Proc. SPIE 1574, Intl Colloquium on Diffractive Optical Elements, (1 October 1991); doi: 10.1117/12.50121
Show Author Affiliations
Jens Hossfeld, Technische Hochschule Darmstadt (Germany)
Erwin Jaeger, Technische Hochschule Darmstadt (Germany)
Theo T. Tschudi, Technische Hochschule Darmstadt (Germany)
Evgeny G. Churin, Institute of Automation and Electrometry (Russia)
Voldemar Petrovich Koronkevich, Institute of Automation and Electrometry (Russia)


Published in SPIE Proceedings Vol. 1574:
Intl Colloquium on Diffractive Optical Elements

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