Description: Questions of discovery of radio of signals of large power in the acoustic optical analyzer of spectrum are considered. Estimations of intensity of processes of 3-fonon disintegrations, resulting in appearance of additional diffraction maximums are conducted. A statistical analysis is conducted and probabilistic descriptions of discovery of visual signals in the acoustic optical analyzer of spectrum are got. It is shown, that the increase of power of initial signal results in worsening discovery descriptions.
Keywords: acoustic-optical analyzer of spectrum, foton-fononе co-operation, fonon-fonon co-operation