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Multi-Color QWIP FPAs for Hyperspectral Thermal Emission InstrumentsInfrared 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 ?m, and featuring 9 grating regions optimized to maximize the responsivity in the individual subbands across the 7.5-12 ?m 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 ?m spectral range.
Document ID
20120018095
Document Type
Conference Paper
External Source(s)
Authors
Soibel, Alexander (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Luong, Ed (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mumolo, Jason M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Liu, John (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rafol, Sir B. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Keo, Sam A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Johnson, William (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Willson, Dan (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hill, Cory J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ting, David Z.-Y. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gunapala, Sarath D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
August 13, 2012
Subject Category
Instrumentation and Photography
Meeting Information
SPIE Optics and Photonics 2012(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
Infrared focal plane arrays (FPAs)
infrared detectors
Quantum Well Infrared Photodetectors (QWIPs)