Silicon nitride micromesh bolometer arrays for SPIRE

James J. Bock; Jason Glenn; Sabrina M. Grannan; Kent D. Irwin; Andrew E. Lange; Henry G. LeDuc; A. D. Turner

doi:10.1117/12.317365

31 July 1998 Silicon nitride micromesh bolometer arrays for SPIRE

James J. Bock, Jason Glenn, Sabrina M. Grannan, Kent D. Irwin, Andrew E. Lange, Henry G. LeDuc, A. D. Turner

Proceedings Volume 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes; (1998) https://doi.org/10.1117/12.317365
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

James J. Bock, Jason Glenn, Sabrina M. Grannan, Kent D. Irwin, Andrew E. Lange, Henry G. LeDuc, and A. D. Turner "Silicon nitride micromesh bolometer arrays for SPIRE", Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); https://doi.org/10.1117/12.317365

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