Study of acoustic emission in glass upon exposure to infrared laser pulses

Resumo

The previously published hypothesis of the acoustic emission (AE) occurrence due to recombination of defects transferred to the surface by an elastic wave is analyzed. The dynamics of the rate of the defect appearance on the surface, controlling the AE level, is determined. The effect of such factors as the character of the dependence of the number of transferred defects on the wave intensity, their fraction in the total number of dislocations, and the wave damping rate in the sample is studied. The results are compared with experimental data.