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A superconductor-insulator-normal metal bolometer with microwave readout suitable for large-format arrays
Published
Author(s)
D. R. Schmidt, Anna Clark, William Duncan, Kent D. Irwin, Nathan A. Tomlin, Joel Ullom, Konrad Lehnert
Abstract
We demonstrate high bandwidth and low noise readout of a superconductor-insulator-normal metal-insulator-superconductor hot-electron bolometer element. We measure a noise equivalent temperature of better than .06 'K/Hz' and infer an electrical noise equivalent power of 7 x 10'17W/Hz' for a normal metal volume of 4.5'm 3 at an operating temperature of 270 mK. Using a pulsed bias technique we measure a thermal time constant of 1.2 's at 270mK. The microwave readout method we employ is compatible with large format arrays of 10-3-10-5 pixels required for future far-infrared space based observatories
Schmidt, D.
, Clark, A.
, Duncan, W.
, Irwin, K.
, Tomlin, N.
, Ullom, J.
and Lehnert, K.
(2005),
A superconductor-insulator-normal metal bolometer with microwave readout suitable for large-format arrays, Applied Physics Letters, [online], https://doi.org/10.1063/1.1855411
(Accessed October 9, 2025)