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Proceedings Paper

Multichannel acousto-optic correlator for time-delay computation
Author(s): Christopher W. Keefer; Michael E. Turbyfill; Harold Gregory Andrews
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Paper Abstract

We built and experimentally tested an in-line interferometric time integrating correlator. This design demonstrates performance improvements compared to other time integrating correlators, because the +1 diffracted orders, which carry the information to be correlated, travel over a common path and because the undiffracted light from the first acousto-optic (AO) cell is used as the input to the second AO cell. The architecture also provides control of the correlation spatial frequency to match the detector elements spatial frequency. The simplicity of the design, improved light efficiency, and increased optical stability make it an attractive alternative for applications in radar signal processing and spectrum analysis.

Paper Details

Date Published: 29 June 1994
PDF: 11 pages
Proc. SPIE 2240, Advances in Optical Information Processing VI, (29 June 1994); doi: 10.1117/12.179140
Show Author Affiliations
Christopher W. Keefer, Rome Lab. (United States)
Michael E. Turbyfill, Rome Lab. (United States)
Harold Gregory Andrews, Rome Lab. (United States)

Published in SPIE Proceedings Vol. 2240:
Advances in Optical Information Processing VI
Dennis R. Pape, Editor(s)

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