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Proceedings Paper

Recent progress in HTSC bolometric detectors at terahertz frequencies
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Paper Abstract

Among the two categories of superconducting detectors that are actually operational for competitive performance in the submillimeter-wave/terahertz range, SIS devices used as heterodyne mixers offer very low noise level, but are frequency limited by the superconducting energy gap. Bolometric detectors on the other hand, although of lesser performance a priori, have no intrinsic frequency limitation due to their purely thermal sensing principle. Moreover, their inherent slow response can be overcome by developing hot- electron bolometer technologies based on superconducting nanostructures, that allow promising output frequencies of several GHz. In order to implement competitive submillimeter wave detectors, wideband planar antennas are preferred to improve the radiation to device coupling, rather than conventional bolometric structures (of either monolithic or composite type) that do not allow both sensitive and fast detector operation. All these aspects are commented and many realizations covering a large number of technologies, in view of both homodyne and heterodyne detection, are reviewed, commented and discussed.

Paper Details

Date Published: 22 December 1998
PDF: 11 pages
Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335899
Show Author Affiliations
Alain J. Kreisler, Univ. de Paris VI and XI (France) and Supelec-Plateau de Moulon (France)
Alain Gaugue, Univ. de Paris VI and XI (France) and Supelec-Plateau de Moulon (France)

Published in SPIE Proceedings Vol. 3481:
Superconducting and Related Oxides: Physics and Nanoengineering III
Davor Pavuna; Ivan Bozovic, Editor(s)

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