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Proceedings Paper

A detector technology investigation for the Exoplanet Characterisation Observatory (EChO)
Author(s): Enzo Pascale; Stuart Forder; Peter Knowles; Rashmi V. Sudiwala; Bruce Swinyard; Marcell Tessenyi
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Paper Abstract

The Exoplanet Characterisation Observatory (EChO) is currently being studied by ESA as a medium class mis­ sion to be launched in the third decade of the new millennium. EChO requires exquisite detector sensitivity and stability under low- background conditions. The EChO longest wavelength instrument covers the very long wave­ length (VLWIR) spectral band from 10 to 16 µm and HgCdTe (MCT) photoconductors constitute a promising technology. Currently available MCT detectors have been developed for high-background and high-temperature operations and little is known about the performance achievable when the same detectors are operated at cryo­ genic temperatures, between 77 K and 4 K. Here we report on the optical and dark measurements obtained on VLWIR MCT photoconductors from European manufacturers at cryogenic temperatures.

Paper Details

Date Published: 21 September 2012
PDF: 4 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84422Z (21 September 2012); doi: 10.1117/12.927207
Show Author Affiliations
Enzo Pascale, Cardiff Univ. (United Kingdom)
Stuart Forder, SELEX Galileo Infrared Ltd. (United Kingdom)
Peter Knowles, SELEX Galileo Infrared Ltd. (United Kingdom)
Rashmi V. Sudiwala, Cardiff Univ. (United Kingdom)
Bruce Swinyard, Univ. College London (United Kingdom)
Marcell Tessenyi, Univ. College London (United Kingdom)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann, Editor(s)

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