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Proceedings Paper

Laser beam variance measurements using a parabolic transmission filter
Author(s): M. Plante; Claude Pare; Pierre-Andre Belanger; Yves Champagne; J. M. Trudeau; Michel Morin; Peter Ehbets
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Paper Abstract

We report preliminary experimental results on the use of a filter with a parabolic transmission profile for a direct measurement of the spatial variance of the intensity distribution of a laser beam. It is shown that by recording, at various planes, the maximum transmitted power through such a filter, one can characterize the beam without having to determine the corresponding intensity profiles. A simple parabolic fit of the data allows the determination of the required parameters for a second-moment-based beam characterization.

Paper Details

Date Published: 20 November 1996
PDF: 9 pages
Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); doi: 10.1117/12.259906
Show Author Affiliations
M. Plante, Centre d'Optique, Photonique et Laser/Univ. Laval (Canada)
Claude Pare, Centre d'Optique, Photonique et Laser/Univ. Laval (Canada)
Pierre-Andre Belanger, Centre d'Optique, Photonique et Laser/Univ. Laval (Canada)
Yves Champagne, Gentec Inc. (Canada)
J. M. Trudeau, National Optics Institute (Canada)
Michel Morin, National Optics Institute (Canada)
Peter Ehbets, National Optics Institute (Canada)


Published in SPIE Proceedings Vol. 2870:
Third International Workshop on Laser Beam and Optics Characterization
Michel Morin; Adolf Giesen, Editor(s)

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