Problems on acousto-optic Fourier transform
The author investigated the acoustooptic Fourier transform for three and four coherent acoustic beams, recorded the patterns of Bragg-diffracted intensity distributions produced by three and four acoustic beams, respectively, and studied the pattern for the phase difference of pi between three acoustic beams. He extends the concept of the diffraction of a single equivalent slit to that of N equivalent slits, proposes an arranged mode of N equivalent slits in the acoustooptic medium, and obtains expressions for the spacing between equivalent slits.<<ETX>>