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Parallel Channel Acousto-Optic (A-O) Modulation

Design and fabrication considerations for multi-electrode modulation in a single acousto-optic device operating in the near acoustic field are presented. In particular, topics including acoustic and electrical crosstalk and electrode apodization to control Fresnel effects of the sound column on diffracted light are discussed; a concept of nesting electrodes to create overlapping laser beams is introduced.