Goldie, D.J. and Glowacka, D.M. and Withington, S. and Chen, Jiajun and Ade, P.A.R. and Morozov, Dmitry and Sudiwala, R. and Trappe, Neil and Quaranta, O. (2016) Performance of horn-coupled transition edge sensors for L- and S-band optical detection on the SAFARI instrument. Proceedings of SPIE (9914OA). ISSN 0277-786X

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Abstract

We describe the geometry, architecture, dark- and optical performance of ultra-low-noise transition edge sensors as THz detectors for the SAFARI instrument. The TESs are fabricated from superconducting Mo/Au bilayers coupled to impedance-matched superconducting β-phase Ta thin-film absorbers. The detectors have phonon-limited dark noise equivalent powers of order 0.5 - 1.0 aW/ √ Hz and saturation powers of order 20 - 40 fW. The low temperature test configuration incorporating micro-machined backshorts is also described, and construction and typical performance characteristics for the optical load are shown. We report preliminary measurements of the optical performance of these TESs for two SAFARI bands; L-band at 110 − 210 μm and S-band 34 − 60 μm .

Item Type:	Article
Additional Information:	Citation: D. J. Goldie, D. J. Goldie, D. M. Glowacka, D. M. Glowacka, S. Withington, S. Withington, Jiajun Chen, Jiajun Chen, P. A. R. Ade, P. A. R. Ade, D. Morozov, D. Morozov, R. Sudiwala, R. Sudiwala, N. A. Trappe, N. A. Trappe, O. Quaranta, O. Quaranta, } "Performance of horn-coupled transition edge sensors for L- and S-band optical detection on the SAFARI instrument", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99140A (19 July 2016); doi: 10.1117/12.2232740; https://doi.org/10.1117/12.2232740
Keywords:	Transition edge sensor; far-infrared bolometer; optical characterization; ultra-low noise;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	9838
Identification Number:	https://doi.org/10.1117/12.2232740
Depositing User:	Dr. Neil Trappe
Date Deposited:	28 Aug 2018 13:55
Journal or Publication Title:	Proceedings of SPIE
Publisher:	SPIE
Refereed:	Yes
URI:	https://www.spiedigitallibrary.org
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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