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Towards Dualband Megapixel QWIP Focal Plane ArraysMid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) 1024 x 1024 pixel quantum well infrared photodetector (QWIP) focal planes have been demonstrated with excellent imaging performance. The MWIR QWIP detector array has demonstrated a noise equivalent differential temperature (NEDT) of 17 mK at a 95 K operating temperature with f/2.5 optics at 300 K background and the LWIR detector array has demonstrated a NEDT of 13 mK at a 70 K operating temperature with the same optical and background conditions as the MWIR detector array after the subtraction of system noise. Both MWIR and LWIR focal planes have shown background limited performance (BLIP) at 90 K and 70 K operating temperatures respectively, with similar optical and background conditions. In addition, we have demonstrated MWIR and LWIR pixel co-registered simultaneously readable dualband QWIP focal plane arrays. In this paper, we will discuss the performance in terms of quantum efficiency, NEDT, uniformity, operability, and modulation transfer functions of the 1024 x 1024 pixel arrays and the progress of dualband QWIP focal plane array development work.
Document ID
20080044797
Acquisition Source
Jet Propulsion Laboratory
Document Type
Reprint (Version printed in journal)
Authors
Gunapala, S. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bandara, S. V.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Liu, J. K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mumolo, J. M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hill, C. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rafol, S. B.
(Infravision Systems Altadena, CA, United States)
Salazar, D.
(FLIR Systems, Inc. Goleta, CA, United States)
Woolaway, J.
(FLIR Systems, Inc. Goleta, CA, United States)
LeVan, P. D.
(Air Force Research Lab. Kirkland AFB, NM, United States)
Tidrow, M. Z.
(Missile Defense Agency Washington, DC, United States)
Date Acquired
August 24, 2013
Publication Date
December 1, 2006
Publication Information
Publication: Infrared Physics and Technology
Publisher: Elsevier
Volume: 50
ISSN: 1350-4495
Subject Category
Optics
Distribution Limits
Public
Copyright
Other
Keywords
Infrared detectors
Multi-band
Focal plane arrays
Two-color
Infrared imaging
Dualband
QWIP
Quantum wells

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