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Far-infrared/submillimeter imager-polarimeter using distributed antenna-coupled transition edge sensors

Day, Peter K. and LeDuc, Henry and Goldin, Alexey and Dowell, C. Darren and Zmuidzinas, Jonas (2004) Far-infrared/submillimeter imager-polarimeter using distributed antenna-coupled transition edge sensors. In: Millimeter and Submillimeter Detectors for Astronomy II. Proceedings of SPIE. No.5498. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 857-865. ISBN 9780819454300. https://resolver.caltech.edu/CaltechAUTHORS:20190118-091606400

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Abstract

We describe a new concept for a detector for the submillimeter and far infrared that uses a distributed hot-electron transition edge sensor (TES) to collect the power from a focal-plane-filling slot antenna array. Because superconducting transmission lines are lossy at frequencies greater than about 1 Thz, the sensors must directly tap the antenna, and therefore must match the antenna impedance (~ 30 ohms). Each pixel contains many TESs that are all wired in parallel as a single distributed TES, which results in a low impedance that can match to a multiplexed SQUID readout. These detectors are inherently polarization sensitive, with very low cross-polarization, but can also be easily configured to sum both polarizations for imaging applications. The single polarization version can have a very wide bandwidth of greater than 10:1 with a quantum efficiency greater than 50%. The dual polarization version is narrow band, but can have a higher quantum efficiency. The use of electron-phonon decoupling obviates the need for micro-machining, making the focal plane much easier to fabricate than with absorber-coupled, geometrically isolated pixels. An array of these detectors would be suitable for an imager for the Single Aperture Far Infrared (SAFIR) observatory. We consider two near-term applications of this technology, a 32 x 32 element imaging polarimeter for SOFIA and a 350 µm camera for the CSO.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.552440DOIArticle
Additional Information:© 2004 Society of Photo-optical Instrumentation Engineers (SPIE).
Subject Keywords:bolometer, TES, detector array, slot antenna
Series Name:Proceedings of SPIE
Issue or Number:5498
Record Number:CaltechAUTHORS:20190118-091606400
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190118-091606400
Official Citation:Peter K. Day, Henry G. LeDuc, Alexey Goldin, Charles Darren Dowell, Jonas Zmuidzinas, "Far-infrared/submillimeter imager-polarimeter using distributed antenna-coupled transition edge sensors," Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.552440
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92365
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Jan 2019 18:17
Last Modified:03 Oct 2019 20:43

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