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Proceedings Paper

Laser-beam centering by the opaque wire method
Author(s): Rufino Diaz-Uribe; Roberto Ortega-Martinez
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Paper Abstract

A simple method for centering a Gaussian laser beam is proposed. It consists of partially blocking out the beam by an opaque wire; when the power of the transmitted beam is brought to a minimum, by moving the relative position of the beam and the wire, the center of the beam and that of the wire are in coincidence. By using the usual formulae for Gaussian beams, the behavior of the power variations with the relative wire-beam position, as a function of the width of the wire are analyzed. The error of the method is also analyzed and it is shown that the optimum case is when the wire diameter equals (root)2 the beam radius. We show some experimental results.

Paper Details

Date Published: 5 February 1996
PDF: 3 pages
Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); doi: 10.1117/12.231020
Show Author Affiliations
Rufino Diaz-Uribe, Univ. Nacional Autonoma de Mexico (Mexico)
Roberto Ortega-Martinez, Univ. Nacional Autonoma de Mexico (Mexico)

Published in SPIE Proceedings Vol. 2730:
Second Iberoamerican Meeting on Optics
Daniel Malacara-Hernandez; Sofia E. Acosta-Ortiz; Ramon Rodriguez-Vera; Zacarias Malacara; Arquimedes A. Morales, Editor(s)

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