The 640 × 512 LWIR type-II superlattice detectors operating at 110 K

Temporal stability and correctability of a MWIR T2SL focal plane array

“…Type-II Superlattice (T2SL) is a recent infrared detection technology whose excellent electro-optical performances (expressed as quantum efficiency, dark current density, specific detectivity or NETD) have been widely reported from the shortwave to the very longwave infrared domains [1][2][3][4][5][6][7][8][9][10]. They thus position themselves in competition with well-established cooled infrared technologies (HgCdTe, InSb, XBn, QWIP, etc) for high-performance applications such as radiometric imaging.…”

Residual fixed pattern noise and random telegraph signal noise of a MWIR T2SL focal plane array

“…Type-II Superlattice (T2SL) detectors are a recent commercial infrared technology designed to meet high-performance imaging applications [1][2][3][4][5][6][7][8][9][10], such that electro-optical characterisation efforts are now focused on system-oriented merit functions, for example MTF (Modulation Transfer Function) or stability over time. MTF describes how well a detector can reproduce spatial frequencies [11], whereas stability over time dictates how often the calibration of operational electro-optical systems has to be done, and thus reflects the availability of the system during an operational mission.…”