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Proceedings Paper

Bloch oscillating transistor as the readout element for hot electron bolometers
Author(s): Juha Hassel; Heikki Seppa; Rene Lindell; Pertti Hakonen
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Paper Abstract

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.

Paper Details

Date Published: 8 October 2004
PDF: 8 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.554888
Show Author Affiliations
Juha Hassel, VTT Information Technology (Finland)
Heikki Seppa, VTT Information Technology (Finland)
Rene Lindell, Helsinki Univ. of Technology (Finland)
Pertti Hakonen, Helsinki Univ. of Technology (Finland)


Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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