THE STUDY OF CLASSICAL HIGH POWER LASERS CALORIMETRY WITH APPLICATIONS ON THIN FILMS

摘要

In the present paper we are dealing with the thermal field for free electron laser-thin film interaction. We propose a simplified model which takes into account one global heat equation instead of two coupled heat equations. For parameters which are of the same order of magnitude we take into consideration 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.