  We report the design and operation of a surface-emitting surface acoustic
wave (SAW) acousto-optical modulator which behaves as a cm-scale linear
hologram in response to an applied electronic waveform. The modulator is formed
by an optical waveguide, transducer, and out-coupling surface grating on a 1
mm-thick lithium niobate substrate. We demonstrate the ability to load and
illuminate a 9-region linear hologram into the modulator's 8 mm-long
interaction region using applied waveforms of 280-320 MHz. To the best of the
authors' knowledge, this is the first demonstration of a
monolithically-integrated, surface-emitting SAW modulator fabricated using
lithographic techniques. Applications include practical implementations of a
holographic display.
