Small Pitch SLS FPA Multifunction LADAR Receiver

In this research, Princeton Infrared Technologies will develop a 32x32 on 20 µm pixel pitch Laser Detection and Ranging (LADAR) imager for targeting and reconnaissance capabilities. This advanced imager will feature a Type 2 Strained Layer Superlattice (T2SLS) detector optimized for detection of 2.0 to 2.1 µm wavelength light. Dark currents will be less than 0.1 nA/pixel at -40°C. A custom readout integrated circuit will be designed and fabricated that will measure both time of flight and amplitude of the return signal. The hybridized focal plane array (FPA) will have low noise detection allowing a signal to noise ratio of 1 from 10 photons of return signal, provide 10 cm range resolution out to 10 km range, and operate at 500 fps. The imager design will be architected so that it can be fabricated in larger formats, such as 1280x1024 or larger, in future fabrication runs with no degradation in the above performance parameters.