640x512 15μm HgCdTe MWIR detector with a highly linear low-noise focal-plane array for demanding airborne infrared systems

Recent advancements in cooled mid-wave infrared (MWIR) HgCdTe (MCT) focal plane arrays (FPAs) with a 640x512 format and 15 μm pixel pitch have resulted in significant improvements in electrooptical performance, mechanical reliability, and image uniformity. The read out integrated circuit (ROIC) architecture developed at ASELSAN provides superior linearity and very low temporal noise, leading to improved signal fidelity, dynamic range, and temporal stability. Process optimizations in wire bonding have reinforced the mechanical integrity of the detector assembly, ensuring the compliance with the stringent vibration and shock requirements specified for demanding airborne infrared systems. Furthermore, updates to the cold shield structure have effectively mitigated stray radiation, thereby suppressing optical crosstalk and reducing background-induced artifacts. These integrated enhancements have resulted in a reduced noise-equivalent temperature difference (NETD), enhanced pixel-to-pixel response uniformity, and markedly improved image contrast performance. The findings substantiate the maturity of the cooled MWIR MCT 640x512, 15 μm detector technology for deployment in next-generation airborne and tactical infrared imaging platforms.