A parallel/series array of superconducting cold-electron bolometers with SIS' tunnel junctions

descriptionPublicationkeyboard_double_arrow_right Article 28 Aug 2008Publisher:SPIEJournal:SPIE Proceedings, volume 7,020, page 702,018 (issn: 0277-786X,

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Authors: Leonid Kuzmin;

doi: 10.1117/12.789681

A parallel/series array of superconducting cold-electron bolometers with SIS' tunnel junctions

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Abstract

A novel concept of the parallel/series array of Cold-Electron Bolometers (CEB) with Superconductor-Insulator-Normal (SIN) Tunnel Junctions has been proposed for matching with JFET readout. The current-biased CEBs are connected in series for DC and in parallel for HF signal. A signal is concentrated to the absorber through the capacitance of tunnel junctions and additional capacitance for coupling of superconducting islands. Due to dividing power between CEBs in the array and increasing responsivity, the noise matching could be effectively optimized and the photon Noise Equivalent Power could be easily achieved at 300 mK with a room temperature JFET readout.

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Chalmers University of Technology
Sweden

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