NONLINEAR DYNAMIC OF IR LASER-INDUCED SURFACE PROCESSES

This paper deals with the problems of dynamics of laser(IR)-induced su rface processes. It refers somewhat to laser-induced gas-phase process es near a solid surface and processes of adsorption and desoprtion in the frame at nonequilibrium thermodynamics. The main attention is devo ted to the processes of laser-induced structure formation (metal oxida tion) based on pure thermal effects of laser light, both in the solid and liquid phase. Fundamental results of the theory of nonlinear dynam ics are used to systematize the experimentally observed thermal oscill ations and pattern formation due to hydrodynamic flows appearing from CO2 and YAG laser induced oxidation of metallic foils. The fractal con ception is applied to the surface morphology characterization of oxide layer grown in the laser field.