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Proceedings Paper

Nonmechanical beam steering for active and passive sensors
Author(s): Paul F. McManamon; Edward A. Watson; Terry A. Dorschner; Lawrence J. Barnes
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Paper Abstract

Liquid crystal writable grating technology is being developed for beam steering in laser radar systems. To date, steering of 10.6 micrometers , 1.06 micrometers , and 0.53 micrometers wavelengths has been demonstrated. Preliminary results are described. In this paper we also consider the ability of writable gratings to steer broad spectral band radiation for use in passive sensors. We find that there is potential for these devices in microscan systems because there is little or no dispersion for the small scan angles required in microscanning. The dispersion that is present is less than the resolution of the sensor considered here. For large angle steering we find that dispersion correction or a narrowing of the spectral bandwidth is required. Approaches for dispersion correction and post-detection compensation are discussed.

Paper Details

Date Published: 31 August 1993
PDF: 9 pages
Proc. SPIE 1969, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IV, (31 August 1993); doi: 10.1117/12.154706
Show Author Affiliations
Paul F. McManamon, Air Force Wright Lab. (United States)
Edward A. Watson, Air Force Wright Lab. (United States)
Terry A. Dorschner, Raytheon Co. (United States)
Lawrence J. Barnes, Univ. of Dayton (United States)

Published in SPIE Proceedings Vol. 1969:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IV
Gerald C. Holst, Editor(s)

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