| 摘要 |
An acousto-optic bulk wave Bragg cell having a transparent piezoelectric body and a single-layer interdigital transducer (IDT) signal input array on one surface of the body is adapted to be connected to a microwave (> 1 GHZ) energizing source for launching primarily bulk shear acoustic waves in the body transversely of the plane of the input surface. This Bragg cell is a signal transducer which converts the microwave input signal into an optical wavefront having spatial modulation directly proportional to the input signal and is utilized to diffraction modulate a laser beam directed through the cell transversely of the direction of acoustic wave propagation.
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