Title :
640 × 512 pixel long-wavelength infrared narrowband, multiband, and broadband QWIP focal plane arrays
Author :
Gunapala, Sarath D. ; Bandara, Sumith V. ; Liu, John K. ; Rafol, Sir B. ; Mutnolo, J.M.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A 640 × 512 pixel, long-wavelength cutoff, narrowband (Δλ/λ∼10%) quantum-well infrared photodetector (QWIP) focal plane array (FPA), a four-band QWIP FPA in the 4-15 μm spectral region, and a broadband (Δλ/λ ∼ 42%) QWIP FPA having a 15.4 μm cutoff have been demonstrated. In this paper, we discuss the electrical and optical characterization of these FPAs, and their performance. In addition, we discuss the development of a very sensitive (NEDT ∼ 10.6 mK) 640 × 512 pixel thermal imaging camera having a 9 μm cutoff.
Keywords :
arrays; focal planes; infrared detectors; photodetectors; quantum well devices; 512 pixel; 640 pixel; QWIP focal plane arrays; electrical characterization; infrared camera; long-wavelength infrared; mid-wavelength infrared; monolithic detector array; multiband; narrowband; optical characterization; quantum-well infrared photodetectors; sensitive thermal imaging camera; spatially separated detector array; Detectors; Gallium arsenide; Narrowband; Optical sensors; Photodetectors; Quantum wells; Space technology; Temperature; Testing; Wavelength measurement;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2003.818818
