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Proceedings Paper

Laser ablation thresholds of polymer materials studies
Author(s): Ellina I. Voronina; Vladimir P. Efremov; Vadim E. Privalov; Valery G. Shemanin
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Paper Abstract

The polymer films are widely used as the reflecting materials in any type of optical system. It demands the detail studies of the basics and threshold parameters of laser ablation destruction such a materials in the power laser radiation with pulse energy density in range from 1 up to 100 J/cm2. The probability of the target laser ablation destruction versus the incident laser radiation energy density dependencies for any polymers - the high pressure polyethylene, eopxy compound, polytetraphluoroethylene and rubber for comparing - have been a subject of the experimental studies. It takes into account all of the energy distribution channels - reflectance, scattering and absorbance for laser ablation of these samples. These results show that about 11% of absorbed laser pulse energy was transfered to the target as the shock wave spreading in it when the target thickness is greater than the distance which this shock wave spreads in the time of laser pulse action.

Paper Details

Date Published: 19 February 2004
PDF: 8 pages
Proc. SPIE 5381, Lasers for Measurements and Information Transfer 2003, (19 February 2004); doi: 10.1117/12.547692
Show Author Affiliations
Ellina I. Voronina, St. Petersburg State Polytechnical Univ. (Russia)
Vladimir P. Efremov, St. Petersburg State Polytechnical Univ. (Russia)
Vadim E. Privalov, St. Petersburg State Polytechnical Univ. (Russia)
Valery G. Shemanin, St. Petersburg State Polytechnical Univ. (Russia)


Published in SPIE Proceedings Vol. 5381:
Lasers for Measurements and Information Transfer 2003

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