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Proceedings Paper

Optical requirements and modeling of coupling devices for future far-infrared space missions
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Paper Abstract

The next generation of space missions targeting far-infrared bands will require large-format arrays of extremely lownoise detectors. The development of Transition Edge Sensors (TES) array technology seems to be a viable solution for future mm-wave to Far-Infrared (FIR) space applications where low noise and high sensitivity is required. In this paper we concentrate on a key element for a high sensitivity TES detector array, that of the optical coupling between the incoming electromagnetic field and the phonon system of the suspended membrane. An intermediate solution between free space coupling and a single moded horn is where over-moded light pipes are used to concentrate energy onto multimoded absorbers. We present a comparison of modeling techniques to analyze the optical efficiency of such light pipes and their interaction with the front end optics and detector cavity.

Paper Details

Date Published: 18 February 2010
PDF: 9 pages
Proc. SPIE 7601, Terahertz Technology and Applications III, 76010A (18 February 2010); doi: 10.1117/12.842059
Show Author Affiliations
N. Trappe, National Univ. of Ireland, Maynooth (Ireland)
J. R. Gao, SRON Space Research Organization of the Netherlands (Netherlands)
D. Glowacka, Univ. of Cambridge (United Kingdom)
D. Goldie, Univ. of Cambridge (United Kingdom)
D. Griffin, Rutherford Appleton Lab. (United Kingdom)
P. Khosropanah, SRON Space Research Organization of the Netherlands (Netherlands)
P. Mauskopf, Cardiff Univ. (United Kingdom)
D. Morozov, Cardiff Univ. (United Kingdom)
A. Murphy, National Univ. of Ireland, Maynooth (Ireland)
C. O'Sullivan, National Univ. of Ireland, Maynooth (Ireland)
M. Ridder, SRON Space Research Organization of the Netherlands (Netherlands)
S. Withington, Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 7601:
Terahertz Technology and Applications III
Laurence P. Sadwick; Creidhe M. M. O'Sullivan, Editor(s)

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