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Proceedings Paper

Improved miniaturized HARLID for laser warning systems having high angular resolution
Author(s): Paul P. Webb; Steven M. Soltesz; Andre Cantin; Jean Fortin; Daniel Pomerleau
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Paper Abstract

HARLIDTM is a digital approach to achieving angular sensitivity in a laser warning system. In this version of the HARLIDTM module, a number of improvements are described which correct for certain problems and limitations of earlier devices. The detector used is a 2-detector assembly, consisting of matching silicon and InGaAs arrays assembled in a sandwich configuration, to achieve spectral sensitivity between 500 and 1700 nm. Systematic angular readout errors observed in previous work have been avoided with the use of a new light-guide in which the optical channels are air instead of glass. Improved response time in the short wavelength end of the spectral range has been achieved with the use of thinner active regions in the elements of the silicon array, and a redesigned digital aperture mask significantly improves accuracy and reduces optical vignetting effects. The design and performance characteristics of a 6-bit HARLIDTM are presented.

Paper Details

Date Published: 10 October 2001
PDF: 7 pages
Proc. SPIE 4369, Infrared Technology and Applications XXVII, (10 October 2001); doi: 10.1117/12.445288
Show Author Affiliations
Paul P. Webb, PerkinElmer Optoelectronics Inc. (Canada)
Steven M. Soltesz, PerkinElmer Optoelectronics Inc. (United States)
Andre Cantin, Defence Research Establishment Valcartier (Canada)
Jean Fortin, Defence Research Establishment Valcartier (Canada)
Daniel Pomerleau, Aerex Avionics Inc. (Canada)

Published in SPIE Proceedings Vol. 4369:
Infrared Technology and Applications XXVII
Bjorn F. Andresen; Gabor F. Fulop; Marija Strojnik, Editor(s)

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