A novel type of optical beam scanning device based on the same principle as a phased array radar has been made and demonstrated. This phased array optical scanning device consisted of a uniformly illuminated array of ten closely spaced, single mode GaAs/AlGaAs electrooptic waveguides, each of which was individually addressed to give more than 2pgr; radians of optical phase control. This gave a line of ten point sources of light on a 3 mgr;m pitch at the output face of the array. By independently phase shifting these light sources the output wavefront was controlled to scan a 2deg; wide beam through 20deg; in the far field.
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