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Proceedings Paper

Thermal fields in multimode laser-metallic thin film interaction
Author(s): Mihai Oane; Ion G. Morjan; Rares V. Medianu
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Paper Abstract

In the present paper we are dealing with the thermal fields for laser-metallic thin film interaction. We propose a simplified model which takes into account just one global heat equation instead of two couple heat equations. For the parameters which are the same order of magnitude we take into account just the thermal coefficients of the substrate. The idea of our model is to consider an absorption coefficient as close as possible to reality. We solve the heat equation using the integral transform technique. We plot the thermal field at the interface for different situations. Our results indicate that: (i) the thermal field depends strongly on the absorption coefficient of the thin film and (ii) the length of the interface, at least in the domain 0.1-10 μm does not play an important role in the thermal fields. Specific results are presented for a laser beam operating in the mode TEM01.

Paper Details

Date Published: 29 September 2004
PDF: 9 pages
Proc. SPIE 5527, Advances in Thin Film Coatings for Optical Applications, (29 September 2004); doi: 10.1117/12.555309
Show Author Affiliations
Mihai Oane, National Institute for Laser, Plasma and Radiation (Romania)
Ion G. Morjan, National Institute for Laser, Plasma and Radiation (Romania)
Rares V. Medianu, National Institute for Laser, Plasma and Radiation (Romania)


Published in SPIE Proceedings Vol. 5527:
Advances in Thin Film Coatings for Optical Applications
Jennifer D. T. Kruschwitz; James B. Oliver, Editor(s)

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