Laser beam variance measurements using a parabolic transmission filter

M. Plante; Claude Pare; Pierre-Andre Belanger; Yves Champagne; J. M. Trudeau; Michel Morin; Peter Ehbets

doi:10.1117/12.259906

20 November 1996 Laser beam variance measurements using a parabolic transmission filter

M. Plante, Claude Pare, Pierre-Andre Belanger, Yves Champagne, J. M. Trudeau, Michel Morin, Peter Ehbets

Proceedings Volume 2870, Third International Workshop on Laser Beam and Optics Characterization; (1996) https://doi.org/10.1117/12.259906
Event: Third International Workshop on Laser Beam and Optics Characterization, 1996, Quebec City, Canada

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.

Citation Download Citation

M. Plante, Claude Pare, Pierre-Andre Belanger, Yves Champagne, J. M. Trudeau, Michel Morin, and Peter Ehbets "Laser beam variance measurements using a parabolic transmission filter", Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); https://doi.org/10.1117/12.259906

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