An acoustooptic information system of infralow frequencies

In this paper, an original approach to studying acoustooptic interactions at infralow frequencies using seismic vibrators is proposed. It has been proved by the authors in numerous natural experiments that such sources can radiate low-frequency acoustic oscillations propagating in the atmosphere up to hundreds of kilometers from the source. High-precision metrological properties of vibrators for force and frequency-time characteristics - open up new for investigating acoustooptic interactions at infralow frequencies. An acoustooptic system developed by the authors is described. The system consists of the CV-40 vibrator, an optical bench with a laser emitter with a radiation power of up to 6 W at a wavelength of 850–930 nm and a pulse repetition rate of 1 kHz, a set of acoustic measurement stations, and a meteorological station. The results of natural and test experiments on acoustooptic interactions are presented.