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- W2025549182 abstract "We report on our QWIP focal plane array (FPA) developments for the 8 - 12 μm and 3 - 5 μm regimes. In the long-wavelength infrared, we have realized several types of QWIP FPAs with array sizes from 256 × 256 to 640 × 512 pixels and with different active regions, giving rise to photoconductive and photovoltaic operation, respectively. Best thermal resolution in the 8 - 12 μm regime is obtained with low-noise QWIP FPAs which are based on a photovoltaic QWIP structure. Special emphasis is given to our work on a 640 × 512 mid-wave QWIP FPA, which is based on strained InGaAs/AlGaAs quantum wells lattice matched to a GaAs substrate. By optimizing the carrier concentration and the geometry of the two-dimensional grating with 1.65 μm period, a high quantum efficiency of more than 10% in the long-wavelength part of the 3 - 5 µm regime is achieved, resulting in an excellent thermal resolution of only 14.3 mK." @default.
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- W2025549182 date "2003-01-01" @default.
- W2025549182 modified "2023-10-14" @default.
- W2025549182 title "High-resolution QWIP FPAs for the 8- to 12-μm and 3- to 5-μm regimes" @default.
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- W2025549182 doi "https://doi.org/10.1117/12.451319" @default.
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