Modified multi-channel bragg cell using a phased array structure forthe improvement of overall efficiency

Abstract From the Canadian patent

An interferometric acoustooptic signal processor utilizing a modified multi-channel Bragg cell comprised of a plurality of sets of acoustic transducers. Each set of transducers is arranged in a phased array for receiving input microwave signals from respective ones of a plurality of antennae and, applying the received signals to a block of acoustooptic material, resulting in generation of one or more acoustic waves therein. A laser beam is used to illuminate the Bragg cell and is modulated due to interaction with the acoustic waves resulting in, diffraction of the laser beam and generation of a diffracted beam pattern output from the Bragg cell. A Fourier transform lens focuses the …