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Proceedings Paper

Individual photon counting using e2v L3 CCDs for low background astronomical spectroscopy
Author(s): Yiting Wen; Bernard J. Rauscher; Robert G. Baker; Mark C. Clampin; Peter Fochie; Sara R. Heap; George Hilton; Paul Jorden; Don Linder; Brent Mott; Peter Pool; Augustyn Waczynski; Bruce Woodgate
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Paper Abstract

Sensitive, photon counting array detectors have the potential to dramatically improve the sensitivity of space-based astronomical spectrographs. We present first results from a program evaluating e2v L3 electron-multiplying CCDs as photon counting arrays. We find that L3 CCDs function well as photon counters, and see no show stoppers for our target applications. These include both ground and space-based instruments. Although we do detect spurious charge exceeding the dark current floor of the CCD, we find that physical dark current in the multiplication register is a significant component. This finding is significant because dark current, unlike clock induced charge (another potential culprit), is a problem that CCD designers have solved before.

Paper Details

Date Published: 19 June 2006
PDF: 8 pages
Proc. SPIE 6276, High Energy, Optical, and Infrared Detectors for Astronomy II, 62761H (19 June 2006); doi: 10.1117/12.670447
Show Author Affiliations
Yiting Wen, Science Systems and Applications, Inc. (United States)
Bernard J. Rauscher, NASA Goddard Space Flight Ctr. (United States)
Robert G. Baker, NASA Goddard Space Flight Ctr. (United States)
Mark C. Clampin, NASA Goddard Space Flight Ctr. (United States)
Peter Fochie, e2v technologies Inc. (United States)
Sara R. Heap, NASA Goddard Space Flight Ctr. (United States)
George Hilton, Science Systems and Applications, Inc. (United States)
Paul Jorden, e2v technologies ltd. (United Kingdom)
Don Linder, Sigma Space Corp. (United States)
Brent Mott, NASA Goddard Space Flight Ctr. (United States)
Peter Pool, e2v technologies ltd. (United Kingdom)
Augustyn Waczynski, Global Science and Technologies, Inc. (United States)
Bruce Woodgate, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 6276:
High Energy, Optical, and Infrared Detectors for Astronomy II
David A. Dorn; Andrew D. Holland, Editor(s)

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