Abstract

Laser directional and wavelength sensing devices which can be mounted on a variety of military platforms are needed for possible future optical countermeasure systems. Presently, extremely sensitive and rugged photodetectors operating from NUV to FIR are commercially available. However, determining the direction and wavelength of the illumination is more difficult than merely detecting its presence. What is required is a compact low-power device that quickly gives an unambiguous directional and wavelength indication of laser illumination and makes good estimates of the laser energy's temporal characteristics (pulse frequency and type of modulation), preferably for several wavelengths.

© 1992 Optical Society of America