A detector technology investigation for the Exoplanet Characterisation Observatory (EChO)

被引：0

作者：

Pascale, Enzo ^{[1
]}

Forder, Stuart ^{[2
]}

Knowles, Peter ^{[2
]}

Sudiwala, Rashmi V. ^{[1
]}

Swinyard, Bruce ^{[3
]}

Tessenyi, Marcell ^{[3
]}

机构：

[1] Cardiff Univ, Sch Phys & Astron, 5 Parade, Cardiff CF24 3AA, S Glam, Wales

[2] Selex Galileo Ltd, Millbrook Ind Estate, Southampton, Hants SO15 0L, England

[3] Univ London Univ Coll, Dept Phys & Astron, London WC1E 6BT, England

来源：

SPACE TELESCOPES AND INSTRUMENTATION 2012: OPTICAL, INFRARED, AND MILLIMETER WAVE | 2012年 / 8442卷

关键词：

instrumentation: detectors; HgCdTe photoconductors;

D O I：

10.1117/12.927207

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Exoplanet Characterisation Observatory (EChO) is currently being studied by ESA as a medium class mission 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 wavelength (VLWIR) spectral band from 10 to 16 mu m 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 cryogenic temperatures, between 77K and 4 K. Here we report on the optical and dark measurements obtained on VLWIR MCT photoconductors from European manufacturers at cryogenic temperatures.

引用

页数：4

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