Improved miniaturized HARLID for laser warning systems having high angular resolution

Paul P. Webb; Steven M. Soltesz; Andre Cantin; Jean Fortin; Daniel Pomerleau

doi:10.1117/12.445288

10 October 2001 Improved miniaturized HARLID for laser warning systems having high angular resolution

Paul P. Webb, Steven M. Soltesz, Andre Cantin, Jean Fortin, Daniel Pomerleau

Proceedings Volume 4369, Infrared Technology and Applications XXVII; (2001) https://doi.org/10.1117/12.445288
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

HARLID^TM is a digital approach to achieving angular sensitivity in a laser warning system. In this version of the HARLID^TM 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 HARLID^TM are presented.

Citation Download Citation

Paul P. Webb, Steven M. Soltesz, Andre Cantin, Jean Fortin, and Daniel Pomerleau "Improved miniaturized HARLID for laser warning systems having high angular resolution", Proc. SPIE 4369, Infrared Technology and Applications XXVII, (10 October 2001); https://doi.org/10.1117/12.445288

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