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Proceedings Paper

Boiling process in PMMA irradiated by CO2, DF and HF laser radiations
Author(s): Rene C. Joeckle; Gerard Rapp; Andre Sontag
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Paper Abstract

When irradiated by a low fluence IR laser radiation, a PMMA plate becomes mat. The damage results from the in-depth absorption of the laser light, which yields a microscopic boiling process. The aspect of the trapped bubbles shows the importance of the absorption depth, which varies with the lasers taken into account (CO2, DF and HF). The threshold of this boiling process has been measured as a function of the incident power density for the three lasers considered. The behaviour is conduction-dominated in the case of the C02 laser radiation and absorption-dominated in the case of the DF and HF laser radiations.

Paper Details

Date Published: 1 February 1991
PDF: 5 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25988
Show Author Affiliations
Rene C. Joeckle, French-German Research Institute of Saint-Louis (France)
Gerard Rapp, 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
Concepcion Maroto Domingo; Jose M. Orza, Editor(s)

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