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Proceedings Paper

A novel design for direct-hybrid far-infrared photoconductor arrays
Author(s): Jam Farhoomand
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Paper Abstract

Fabrication of direct hybrid far infrared photoconductor arrays, especially for low background astronomy, is particularly challenging due to arrays' relatively large pixel size, susceptibility to stray radiation even from the faintest IR source, and the requirement for low bias levels. In fact, these problems have hindered the development of far IR direct hybrid arrays, which has been the standard practice for the near and mid IR arrays. In this paper, a new and novel design is presented that addresses the complications afflicting the direct hybrid approach and paves the way for the development of large-format far IR arrays. In particular, the readout glow, detector heating, and thermal mismatch between the readout and the detector array are addressed. The use of a capacitive transimpedance amplifier effectively eliminates the detector debiasing.

Paper Details

Date Published: 8 October 2004
PDF: 7 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.550103
Show Author Affiliations
Jam Farhoomand, TechnoScience Corp. (United States)

Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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