To the problem of the image edge enhancement by means of the diffraction into first order
Theoretically and experimentally is considered the evolution of the image contour during the acousto-optic (AO) Bragg diffraction with the increasing of the acoustic power. It is shown that from the power point of view the variant of the forming of the contour into the first diffraction order is more preferable respect to the forming into zeros order in spite of the first variant occurs with the Bragg synchronism mismatch.