Bloch oscillating transistor as the readout element for hot electron bolometers

Juha Hassel (Corresponding author), Heikki Seppä, Rene Lindell, Pertti Hakonen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)


    In this paper we analyse the properties of the Bloch oscillating transistor as a preamplifier in cryogenic devices. We consider here especially the readout of hot electron bolometers (HEBs) based on Normal-Superconductor-Insulator tunnel junctions, but the results also apply more generally. We show that one can get an equivalent noise voltage below 1 nV/&sqrt;Hz with a single BOT. By using N BOTs in a parallel array configuration, a further reduction by factor &sqrt;N may be achieved.
    Original languageEnglish
    Title of host publicationMillimeter and Submillimeter Detectors for Astronomy II
    EditorsJonas Zmuidzinas, Wayne S. Holland, Stafford Withington
    Place of PublicationBellingham
    PublisherInternational Society for Optics and Photonics SPIE
    ISBN (Print)978-0-8194-5430-0
    Publication statusPublished - 2004
    MoE publication typeA4 Article in a conference publication
    EventSPIE Astronomical Telescopes and Instrumentation 2004 - Glasgow, United Kingdom
    Duration: 21 Jun 200425 Jun 2004

    Publication series

    SeriesProceedings of SPIE


    ConferenceSPIE Astronomical Telescopes and Instrumentation 2004
    Country/TerritoryUnited Kingdom


    • bloch oscillating transistor
    • BOT
    • bolometers
    • superconducting bolometers
    • hot electron bolometers


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