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Development of a 2K x 2K GaAs QWIP Focal Plane ArrayWe are developing the next generation of GaAs Quantum Well Infrared Photodetector (QWIP) focal plane arrays (FPAs) in preparation for future NASA space-borne Earth observing missions. It is anticipated that these missions will require both wider ground spatial coverage as well as higher ground imaging resolution. In order to demonstrate our capability in meeting these future goals we have taken a two-tiered approach in the next stage of advanced QWIP focal plane array development. We will describe our progress in the development of a 512 x 3,200 (512 x 3K) array format for this next generation thermal imaging array for the NASA Landsat project. However, there currently is no existing readout integrated circuit (ROIC) for this format array.so to demonstrate the ability to scale-up an existing ROIC we developed a 1,920 x 2,048 (2K x 2K) array and it hybridized to a Raytheon SB419 CTIA readout integrated circuit that was scaled up from their existing 512 x 640 SB339 ROIC. Two versions of the 512 x 3K QWIP array were fabricated to accommodate a future design scale-up of both the Indigo 9803 ROIC based on a 25 micron pixel dimension and a scale up of the Indigo 9705 ROIC based on a 30 micron pixel dimension. Neither readout for the 512 x 3K has yet to be developed but we have fabricated both versions of the array. We describe the design, development and test results of this effort as well as the specific applications these FPAs are intended to address.
Document ID
20130013408
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Jhabvala, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Choi, K. (Army Research Lab. Adelphi, MD, United States)
Jhabvala, C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kelly, D. (MEI Technologies, Inc. Seabrook, MD, United States)
Hess, L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ewin, A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
La, A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wacynski, A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sun, J. (Army Research Lab. Adelphi, MD, United States)
Adachi, T. (Catholic Univ. of America Washington, DC, United States)
Costen, N. (MEI Technologies, Inc. Seabrook, MD, United States)
Ni, Q. (MEI Technologies, Inc. Seabrook, MD, United States)
Snodgrass, Stephen (MEI Technologies, Inc. Seabrook, MD, United States)
Foltz, Roger (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 27, 2013
Publication Date
April 29, 2013
Subject Category
Instrumentation And Photography
Report/Patent Number
GSFC.CP.7565.2013
Meeting Information
Meeting: SPIE: Defense, Security and Sensing
Location: Baltimore, MD
Country: United States
Start Date: April 29, 2013
End Date: May 3, 2013
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Public Use Permitted.

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