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Design and performance of feedhorn-coupled bolometer arrays for SPIRE

Rownd, B. and Bock, J. J. and Chattopadhyay, G. and Glenn, J. and Griffin, M. (2003) Design and performance of feedhorn-coupled bolometer arrays for SPIRE. In: Millimeter and Submillimeter Detectors for Astronomy. Proceedings of SPIE. No.4855. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 510-519. ISBN 9780819446343.

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This paper reviews the design, modeling, and testing of feedhorn arrays coupled to bolometric detector arrays being developed for the ESA Herschel Space Observatory's SPIRE instrument. SPIRE will incorporate five arrays of silicon nitride micromesh bolometers, in three broadband photometers and two Fourier-Transform spectrometers covering 200-700 μm, with a total of 326 feedhorn-coupled bolometers. The precision feedhorn arrays are formed by close-packing individually fabricated conical feedhorns, which terminate in waveguides and integrating cavities. The detector array is efficiently packaged by mounting it between a metallized silicon backshort array and the feedhorn array, which encloses the bolometers in precisely tuned integrating cavities. The absorption efficiency, bandwidth, and cross talk were first investigated with numerical simulations of the electromagnetic fields, and then measured for prototype arrays in a test facility. This discussion describes the design goals, simulations, fabrication, and measurements of optical efficiencies, spectral properties, beam shapes, and cross talk between bolometers.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Bock, J. J.0000-0002-5710-5212
Chattopadhyay, G.0000-0001-7942-5025
Glenn, J.0000-0001-7527-2017
Additional Information:© 2003 Society of Photo-optical Instrumentation Engineers (SPIE). We would like to gratefully acknowledge Martin Caldwell, Anthony Murphy and Clency Lee-Yow for useful discussions related to feedhorn design.
Subject Keywords:feedhorns, bolometers, SPIRE, Herschel Space Observatory, submillimeter
Series Name:Proceedings of SPIE
Issue or Number:4855
Record Number:CaltechAUTHORS:20190116-154612185
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Official Citation:Brooks Rownd, James J. Bock, Goutam Chattopadhyay, Jason Glenn, Matthew J. Griffin, "Design and performance of feedhorn-coupled bolometer arrays for SPIRE," Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459372
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92328
Deposited By: Tony Diaz
Deposited On:18 Jan 2019 03:39
Last Modified:16 Nov 2021 03:49

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