<title>Atmospheric optoacoustics of power parameters of a high-power laser beam</title>

Abstract

The propagation of high-power laser radiation (HPLR) in an atmosphere is accompanied by radiation of acoustic waves. The characteristics of optoacoustical signals depend on factor of absorption HPLR and its power parameters. It is necessary to take into account absorption and attenuation of acoustic waves arising in the channel HPLR, in tasks of restoration of power parameters HPLR on optoacoustical signals. The deforming influence of an atmosphere on amplitude-frequency a spectrum registered on distance up to 1 km of optoacoustical signals is reduced to the account of classical absorption, of turbulent and preearthly attenuation. In work the questions of optimum program processing registered in experimental measurements of optoacoustical signals generated by the channel HPLR in an atmosphere are considered. The developed algorithm is realized in the created software «Atmospheric optoacoustics», allowing in real time on the basis of the meteorological data to compensate deforming influence of an atmosphere and spreading surface on amplitude-frequency the characteristics of optoacoustical signals of a sound range of frequencies.