Mécanismes fondamentaux de l'ablation laser femtoseconde en "flux intermédiaire"

In French - Acte Ecole thématique "Femto2004", Porquerolles, Sept. 2004This chapter aims at identifying what is specific to femtosecond laser ablation. It reviews the essential basic processes which contribute to femtosecond laser ablation of various materials : energy absorption by the material's electrons, electronic relaxation processes involving either electron-electron or electron-lattice interactions. A number of widely used models are briefly discussed, as well as some pending questions