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Proceedings Paper

Quantitative analysis of a CO2 laser beam by PMMA burn patterns
Author(s): Rene C. Joeckle; Axel Koeneke; Andre Sontag
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Paper Abstract

A quantitative knowledge of the threshold fluence of surface damage produced by the CO2 laser irradiation of a PMMA plate enables us to design a simple method of measuring the power density distribution in a CO2 laser beam. By varying the irradiation times, one obtains several burn patterns, each of them characteristic of a well-defined power density. The power density distribution can then be drawn. This method has been used for studying the power density distribution in several high-power laser beams. Although it is non-instantaneous, this simple and cheap method offers a large spatial resolution and gives interesting results when compared to sophisticated CO2 beam analysers.

Paper Details

Date Published: 1 February 1991
PDF: 4 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25987
Show Author Affiliations
Rene C. Joeckle, French-German Research Institute of Saint-Louis (France)
Axel Koeneke, French-German Research Institute of Saint-Louis (France)
Andre Sontag, French-German Research Institute of Saint-Louis (France)


Published in SPIE Proceedings Vol. 1397:
8th Intl Symp on Gas Flow and Chemical Lasers

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