Analytical Model for Determining the Effective Size of an Evaporation Region in Pulsed Laser Ablation
A. A. Morozov
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: тепловая модель импульсной лазерной абляции, неоднородность температуры поверхности, thermal model of pulsed laser ablation, surface temperature inhomogeneity
Abstract
This paper describes the study of the effect of spatial inhomogeneity of surface temperature on the size of a crater forming in the case of pulsed laser ablation. It is assumed that the surface temperature is linearly dependent on laser radiation energy. Analytical expressions determining the effective radius of an evaporation region, characteristic temperatures of the surface on which evaporation occurs, and evaporation depths in the case of the Gaussian distribution of laser radiation energy are derived. It is shown that the analytical dependences obtained are in good agreement with known numerical calculation results.
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