Spatial and angular multiplexing by an acousto-optic deflector device for a holographic memory system

Three architectures of acousto-optic deflectors performing both spatial and angular multiplexing for holographic memory systems are discussed. The main parameters of such deflectors are determined and analyzed. It is found that increase in one parameter inevitably results in decrease in one or two other parameters. The highest information capacity can be achieved in the two coordinate multichannel variants.