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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/42310

Title: Multi-color QWIP FPAs for Hyperspectral thermal emission instruments
Authors: Soibel, Alexander
Luong, Ed
Mumolo, Jason M.
Liu, John
Rafol, Sir B.
Keo, Sam A.
Johnson, William
Willson, Dan
Hill, Cory J.
Ting, David Z.-Y.
Gunapala, Sarath D.
Keywords: infrared detectors
Infrared focal plane arrays (FPAs)
Quantum Well Infrared Photodetectors (QWIPs)
Issue Date: 13-Aug-2012
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012.
Citation: SPIE Optics and Photonics 2012, San Diego, California, August 12-16,2012
Abstract: Infrared focal plane arrays (FPAs) covering broad mid- and long-IR spectral ranges are the central parts of the spectroscopic and imaging instruments in several Earth and planetary science missions. To be implemented in the space instrument these FPAs need to be large-format, uniform, reproducible, low-cost, low 1/f noise, and radiation hard. Quantum Well Infrared Photodetectors (QWIPs), which possess all needed characteristics, have a great potential for implementation in the space instruments. However a standard QWIP has only a relatively narrow spectral coverage. A multi-color QWIP, which is compromised of two or more detector stacks, can to be used to cover the broad spectral range of interest. We will discuss our recent work on development of multi-color QWIP for Hyperspectral Thermal Emission Spectrometer instruments. We developed QWIP compromising of two stacks centered at 9 and 10.5 μm, and featuring 9 grating regions optimized to maximize the responsivity in the individual subbands across the 7.5-12 μm spectral range. The demonstrated 1024x1024 QWIP FPA exhibited excellent performance with operability exceeding 99% and noise equivalent differential temperature of less than 15 mK across the entire 7.5-12 μm spectral range.
URI: http://hdl.handle.net/2014/42310
Appears in Collections:JPL TRS 1992+

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