SWIR imagers can operate at near room temperature with cut-off wavelengths that extended from 1.7μm (for InP lattice
matched InGaAs) to beyond 2.0μm with strained InGaAs epitaxial growth on InP substrate. A leading application in the
SWIR band - Night vision, requires very low dark current levels, whereas the dark current increases as the cutoff
wavelength increases. We demonstrate imaging applications made possible by utilization of dark current reduction, and
the physics of background and objects radiance. A newly built imager is presented.
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