Abstract
The paper deals with an one-dimensional model of short pulse laser irradiation of the Al2O3 target and with simulation of the temperature distribution induced by it. In the model the temperature-dependent specific heat was considered. Also the latent heats of melting and evaporation were involved. The influence of energy density and absorption coefficient on the effect of overheating was examined. Experimental results on the ablation rate of the Al2O3 target by pulsed CO2 TEA laser in the evaporation regime and the threshold energy agreed well with the model.
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