18 July 2008 Performance of microstrip-coupled TES bolometers with finline transitions
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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, Michael D. Audley, Dorota Glowacka, Dorota Glowacka, David J. Goldie, David J. Goldie, Vassilka Tsaneva, Vassilka Tsaneva, Stafford Withington, Stafford Withington, Paul K. Grimes, Paul K. Grimes, Chris E. North, Chris E. North, Ghassan Yassin, Ghassan Yassin, Lucio Piccirillo, Lucio Piccirillo, Peter Ade, Peter Ade, Rashmi V. Sudiwala, 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); doi: 10.1117/12.789076; https://doi.org/10.1117/12.789076
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