Transformation of light beams under Bragg''s diffraction on the frequency-modulated ultrasonic wave
Specific features of Bragg's diffraction of the boundaries of light beams on the frequency-modulated acoustical signal are investigated. The expression for a space distributed amplitude of a diffracted beam is obtained in closed form. It is shown that the space distribution of the amplitude of a diffracted beam transforms when changing the relation of the incident light beam and the space modulation function transitioning to many-beam structures of Bragg's maxima.