We report on a quantum cascade detector based on nearly strain compensated InGaAs∕InAlAs pseudomorphically grown on InP substrate and detecting light at short wavelengths around 4μm. The background limited infrared performance (BLIP) condition is met at a temperature of 108K with a high detectivity of DBLIP*=1.2×1011Jones.
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Giorgetta et al. (2008) studied this question.
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