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 | ||||||
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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 | ||||||
DOI: | 10.1117/12.552440 | ||||||
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: | 16 Nov 2021 03:49 |
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