SWIR imagers are seeing wide use in commercial and defense applications. The conventional choice for the detector is InGaAs lattice-matched to InP. Recently, colloidal quantum dots using PbS have shown promise as a SWIR responsive material. CQDs have the promise or reducing SWIR sensors cost substantially, but the performance difference requires more characterization. We demonstrate both InGaAs and CQDs in focal plane arrays using the same ROIC, the AE1702, which is a 640x512 format ROIC with a 5 μm pixel pitch. We, show spectra, PTC measurements, and imaging. In addition, we show measurements using 1900 nm CQDs-based FPAs.
Attollo Engineering specializes in developing small pixel pitch infrared imaging sensors. Small pixel pitch sensors offer opportunities for imaging system SWaP reduction that open up a variety of SWaP-constrained applications that were not previously feasible. The size and weight of the optics also decrease because of the small pixel, enabling further SWaP savings. Attollo Engineering will present characteristics of their SWIR camera line, which includes QVGA, VGA, and HD formats, all using a 5 µm pixel pitch sensor based on InGaAs detectors. They will also show imagery taken with their SWIR cameras.
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