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2 February 2004 Large format long-wavelength infrared narrow-band, multi-band, and broad-band QWIP focal plane arrays
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Abstract
A 640x512 pixel, long-wavelength cutoff, narrow-band (Δλ/λ~10%) quantum well infrared photodetector (QWIP) focal plane array (FPA), a four-band QWIP FPA in 4-16 μm spectral region, and a broad-band (Δλ/λ~42%) QWIP FPA having 15.4 μm cutoff have been demonstrated. In this paper we discuss the detector designs, dark currents, quantum efficiencies, responsivities, detectivities, noise equivalent differential temperatures (NEDTs), the effect of FPA nonuniformity on performance, and the operabilities of these QWIP FPAs. In addition, we discuss the development of a very sensitive (NEDT~10.6 mK) 640x512 pixel thermal imaging camera having 9 μm cutoff.
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Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, Sir B. Rafol, and Jason M. Mumolo "Large format long-wavelength infrared narrow-band, multi-band, and broad-band QWIP focal plane arrays", Proc. SPIE 5234, Sensors, Systems, and Next-Generation Satellites VII, (2 February 2004); doi: 10.1117/12.504900; https://doi.org/10.1117/12.504900
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