Germanium nonscanned infrared image converter

Infrared image converters using nickel and gold doped germanium have been built. These devices provide image brightness up to 1 fL and resolution of 25 line pairs/cm. The devices are within a factor of 100 and 10, respectively, of "seeing" 2-5 µm radiation from an ambient temperature (∼ 300 ° K) scene. Copper doped germanium was also studied, but was found to have a low breakdown voltage rendering it unuasble for these devices.