Monolithic 128 × 128 InSb FPA´s for staring infrared imaging systems

A 128 × 128 monolithic InSb array is developed for application in staring infrared imaging systems operating in the 3-5 µm spectral range. The array uses a 1.2 × 1.2 mil unit cell with a measured bucket capacity of about 500,000 carriers. Factors affecting bucket capacity are discussed. Thermal imagery was demonstrated with an experimental laboratory model operating at 30 frames/sec. A system MRT of 0.5°C, limited by preamplifier noise and offsets, was measured for a single frame of data. The theoretical NE Δ T for operation under ideal conditions is 0.04°C with no frame averaging.