640x512 pixel narrowband, multiband, and broadband LWIR QWIP focal plane arrays

Sarath D. Gunapala; Sumith V. Bandara; J. K. Liu; Sir B. Rafol; Jason M. Mumolo

doi:10.1117/12.498137

10 October 2003 640x512 pixel narrowband, multiband, and broadband LWIR QWIP focal plane arrays

Sarath D. Gunapala, Sumith V. Bandara, J. K. Liu, Sir B. Rafol, Jason M. Mumolo

Proceedings Volume 5074, Infrared Technology and Applications XXIX; (2003) https://doi.org/10.1117/12.498137
Event: AeroSense 2003, 2003, Orlando, Florida, United States

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.

Citation Download Citation

Sarath D. Gunapala, Sumith V. Bandara, J. K. Liu, Sir B. Rafol, and Jason M. Mumolo "640x512 pixel narrowband, multiband, and broadband LWIR QWIP focal plane arrays", Proc. SPIE 5074, Infrared Technology and Applications XXIX, (10 October 2003); https://doi.org/10.1117/12.498137

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