Performance of microstrip-coupled TES bolometers with finline transitions

Michael D. Audley; Dorota Glowacka; David J. Goldie; Vassilka Tsaneva; Stafford Withington; Paul K. Grimes; Chris E. North; Ghassan Yassin; Lucio Piccirillo; Peter Ade; Rashmi V. Sudiwala

doi:10.1117/12.789076

18 July 2008 Performance of microstrip-coupled TES bolometers with finline transitions

Michael D. Audley, Dorota Glowacka, David J. Goldie, Vassilka Tsaneva, Stafford Withington, Paul K. Grimes, Chris E. North, Ghassan Yassin, Lucio Piccirillo, Peter Ade, Rashmi V. Sudiwala

Author Affiliations +

Proceedings Volume 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV; 70200M (2008) https://doi.org/10.1117/12.789076
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

We have fabricated TES bolometers with finline transitions for the CℓOVER project. We have measured the optical response of CℓOVER's first prototype 97-GHz detectors and find that they have a detection efficiency close to 100%. We have also investigated the effects of misalignment of the finline in the waveguide and of thinning the substrate. The prototype detectors have dark NEPs as low as 1.5 x 10^-17W/√Hz and satisfy the requirement of photon-noise limited operation on CℓOVER. We describe the optical tests of CℓOVER's prototype 97-GHz detectors and discuss their implications for the design of the science-grade detectors.

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Michael D. Audley, Dorota Glowacka, David J. Goldie, Vassilka Tsaneva, Stafford Withington, Paul K. Grimes, Chris E. North, Ghassan Yassin, Lucio Piccirillo, Peter Ade, and Rashmi V. Sudiwala "Performance of microstrip-coupled TES bolometers with finline transitions", Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70200M (18 July 2008); https://doi.org/10.1117/12.789076

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