Results of Development and Researches of the LWIR 4x288 FPA Based on MCT Photodiodes

摘要

The results of development, researches and tests of the 4x288 focal plane array (FPA) for a spectral range 8-12 microns are given. The cooled photoreception module of the FPA represents hybrid assembly of a matrix photosensitive element based on liquid phase epitaxy (LPE) mercury-cadmium-telluride (MCT) photodiodes and cooled silicon readout integrated circuit (ROIC). Connection of the MCT and ROIC is carried out by means of In bumps. Cooled silicon readout circuits have been made by n-MOS technology with no TDI stages at focal plane. For 11.5 μm cutoff wavelength detectivity is higher then 1x10~(11) cmW~(-1)Hz~(1/2) for 4x288 FPA with four TDI elements.