Abstract
The development of a digital electro-optic light beam deflector (DLD) is described. Each deflection stage consists of a DKDP polarization switch with a coating of transparent electrodes (longitudinal electro-optic effect) and a calcite prism for angular deflection. Effects which limit the switching frequency and the capacity speed product (i.e. product of the number of resolvable beam directions and the switching frequency) are theoretically investigated. A four-stage solid-state DLD has been realized which operates at switching frequencies up to 10 kHz and at a random access time of 30 μ s. The system is going to be expanded to 8 × 8 stages for the addressing of 256 × 256 beam directions.
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