Abstract
We have measured the time of the optical response of a 350-GHz radiation detector based on a superconductor–insulator–normal metal–insulator–superconductor tunnel structure with a suspended normal-metal bridge integrated into a planar log-periodic antenna. The transient characteristics of the detector were recorded when irradiated by a fast cryogenic blackbody source with a rise time of the order of microseconds. For this purpose, a short intense heating pulse was fed to an emitting NiCr film radiation source with a low heat capacity. The measured response time was 1.8 ± 0.5 μs at a bolometer electron temperature of 0.17 K, with a detection sensitivity of 10–17–10–18 W Hz–1/2 being potentially achievable.
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Original Russian Text © S.A. Lemzyakov, M.A. Tarasov, V.S. Edelman, 2018, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 153, No. 6, pp. 992–1000.
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Lemzyakov, S.A., Tarasov, M.A. & Edelman, V.S. Investigation of the Speed of a SINIS Bolometer at a Frequency of 350 GHz. J. Exp. Theor. Phys. 126, 825–832 (2018). https://doi.org/10.1134/S1063776118060043
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DOI: https://doi.org/10.1134/S1063776118060043