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Using high doping densities and 100 wells, we demonstrate that standard quantum well infrared photodetectors (QWIPs) can have high absorption. We present experimental results on two wafers designed for 5 and 8 μm peak detection wavelengths. High absorption QWIPs, in conjunction with their intrinsic high speed capability, could lead to new applications in areas such as free space communication and environmental sensing.
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Oogarah et al. (2002) studied this question.
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