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

Trappe, N., Gao, J. R., Glowacka, D., Goldie, D., Griffin D., D., Khosropanah, P., Mauskopf, Philip Daniel, Morozov, Dmitry L., Murphy, A., O'Sullivan, C., Ridder, M. and Withington, S. 2010. Optical requirements and modeling of coupling devices for future far-infrared space missions. Presented at: Terahertz technology and applications III, San Francisco, CA, USA, 27-28 January 2010. Published in: Sadwicke, Laurence P. and O'Sullivan, Creidhe M. M. eds. Terahertz Technology and Applications III, San Francisco, California, USA, 27-28 January 2010. Proceedings of SPIE , vol. 7601. Bellingham, WA.: SPIE, 10.1117/12.842059

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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.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Detector arrays; Far infrared; Free space; Modeling; Optics; Phonons; Sensors
Publisher: SPIE
ISBN: 9780819479976
Last Modified: 07 Sep 2019 22:23
URI: http://orca.cf.ac.uk/id/eprint/24845

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