64 channel acousto-optical Bragg cells for optical computing applications

David W. Graves

doi:10.1117/12.2321737

1 December 1991 64 channel acousto-optical Bragg cells for optical computing applications

David W. Graves

Proceedings Volume 1563, Optical Enhancements to Computing Technology; (1991) https://doi.org/10.1117/12.2321737
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Matrix - matrix and matrix - vector multiplications can be performed optically using techniques involving a number of spatial light modulator technologies. Acousto-optic modulators offer the advantages of high efficiency and fast reconfiguration times, on the order of several nanoseconds. Recent efforts to reduce the package size of the acousto-optic SLM devices and increase their pertormance characteristics have rendered this approach more attractive to system designers. This paper reports the results of such efforts applied to a 64 channel acousto-optic modulator and a 64 channel acousto-optic deflector that can be used in tandem to optically compute matrix-matrix and matrix-vector calculations. The modulator is placed in the optical path prior to the deflector and is used as the column selector. The deflector can be operated by pulsing the RF signals to produces packets of information along the optical aperture and reimaging the deflector at the detector plane. This method known as Scophony imaging performs the function of row selector and allows true two-dimensional SLM operation from the acousto-optic devices. Specification trade-offs and fabrication issues are covered. Measured performance parameters are summarized.

Citation Download Citation

David W. Graves "64 channel acousto-optical Bragg cells for optical computing applications", Proc. SPIE 1563, Optical Enhancements to Computing Technology, (1 December 1991); https://doi.org/10.1117/12.2321737

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