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Proceedings Paper

Evaluation of H2RG stability for infrared Earth-observing systems
Author(s): P. W. Sullivan; W. K. Edens; E. H. Darlington; D. O. Neil
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Paper Abstract

Although originally developed for astronomical applications, the space qualification and availability of the Teledyne HAWAII detector make it appealing for high-precision Earth-observing systems such as the carbon monoxide correlation radiometer required for GEO-CAPE. In this shot noise-limited application, the signal-to-noise ratio of a co-averaged measurement is driven by the detector's temporal stability. To assess the stability, we operated the H2RG under monitored blackbody illumination. The Teledyne SIDECAR ASIC provided 16-bit digitization and clocking for integration times faster than the frame conversion time. With proper application of reference signals, the co-averaging of hundreds of frames is possible. Integrations of one-quarter of the full well depth can attain precision to the 200 ppm level in the co-averaged result. For integrations above three-quarters the well depth, the precision reaches 111 ppm.

Paper Details

Date Published: 16 September 2011
PDF: 9 pages
Proc. SPIE 8155, Infrared Sensors, Devices, and Applications; and Single Photon Imaging II, 81550S (16 September 2011); doi: 10.1117/12.893702
Show Author Affiliations
P. W. Sullivan, The Johns Hopkins Univ. Applied Physics Lab. (United States)
W. K. Edens, The Johns Hopkins Univ. Applied Physics Lab. (United States)
E. H. Darlington, The Johns Hopkins Univ. Applied Physics Lab. (United States)
D. O. Neil, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 8155:
Infrared Sensors, Devices, and Applications; and Single Photon Imaging II
Manijeh Razeghi; Paul D. LeVan; Ashok K. Sood; Priyalal S. Wijewarnasuriya, Editor(s)

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