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Article Dans Une Revue Journal of the European Optical Society : Rapid publications Année : 2011

Tridimensional multiphysics model for the study of photo-induced thermal effects in arbitrary nano-structures

Laurent Gallais
ILM
Mireille Commandre
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Résumé

In the present paper, we detail the implementation of a numerical scheme based on the Finite Element Method (FEM) dedicated to a tridimensional investigation of photo-induced thermal effects in arbitrary nano-structures. The distribution of Joule losses resulting from the scattering of an incident wave by an arbitrary object embedded in a multilayered media is used as source of a conductive thermal transient problem. It is shown that an appropriate and rigorous formulation of the FEM consists in reducing the electromagnetic scattering problem to a radiative one whose sources are localized inside the scatterer. This approach makes the calculation very tractable. Its advantage compared to other existing methods lies in its complete independence towards the geometric, optical and thermal properties of both the scatterer and the medium in which it lies. Among the wide range of domain of application of this numerical scheme, we illustrate its relevance when applied to two typical cases of laser damage of optical components in high power applications.

Dates et versions

hal-00639944 , version 1 (10-11-2011)

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Guillaume Demesy, Laurent Gallais, Mireille Commandre. Tridimensional multiphysics model for the study of photo-induced thermal effects in arbitrary nano-structures. Journal of the European Optical Society : Rapid publications, 2011, 6, pp.11037. ⟨10.2971/jeos.2011.11037⟩. ⟨hal-00639944⟩
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