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Proceedings Paper

Silicon nitride micromesh bolometer arrays for SPIRE
Author(s): James J. Bock; Jason Glenn; Sabrina M. Grannan; Kent D. Irwin; Andrew E. Lange; Henry G. LeDuc; A. D. Turner
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Paper Abstract

We are developing arrays of bolometers based on silicon nitride micromesh absorbers for the Spectral & Photometric Imaging Receiver (SPIRE) on the Far Infra-Red and Submillimeter Space Telescope (FIRST). The bolometers are coupled to a close-packed array of 1 f(lambda) feedhorns which views the primary mirror through a cooled aperture stop. Feedhorn-coupled bolometers minimize the detector area and throughput and have good optical efficiency. A 1 f(lambda) feedhorn array provides, higher mapping speed than a 2 f(lambda) feedhorn array and reduces the number of jitters required to produce a fully sampled map, but at the cost of more detectors. Individual silicon nitride micromesh bolometers are already able to meet the performance requirements of SPIRE. In parallel we are developing transition-edge detectors read out by SQUID current amplifier. The relatively large cooling power available at 300 mK enables the array to be coupled to a cold SQUID multiplexer, creating a monolithic fully multiplexed array and making large format arrays possible for SPIRE.

Paper Details

Date Published: 31 July 1998
PDF: 8 pages
Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); doi: 10.1117/12.317365
Show Author Affiliations
James J. Bock, Jet Propulsion Lab. (United States)
Jason Glenn, California Institute of Technology (United States)
Sabrina M. Grannan, Jet Propulsion Lab. (United States)
Kent D. Irwin, National Institute of Standards and Technology (United States)
Andrew E. Lange, California Institute of Technology (United States)
Henry G. LeDuc, Jet Propulsion Lab. (United States)
A. D. Turner, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3357:
Advanced Technology MMW, Radio, and Terahertz Telescopes
Thomas G. Phillips, Editor(s)

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