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Proceedings Paper

Recent progress in HTSC bolometric and nonbolometric detectors
Author(s): Alain J. Kreisler; Alain Gaugue; Zouhaier Ben Ayadi; Annick Degardin; Jean-Michel Depond
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Paper Abstract

The main phenomena that may be responsible of radiation detecting mechanisms in superconductors are described in a first part of this paper. Several examples are given, ranging from broadband and sensitive bolometric devices to ultrafast nonbolometric infrared detectors. The second part is devoted to the study of various transition edge bolometers designed to be built at low cost. Polycrystalline zirconia substrates have been used, to grow YBCO films by both in situ and ex situ oxygenation after radiofrequency sputtering. The voltage responsivity at 10.6 micrometers wavelength has been studied with respect to the modulation frequency of the incident radiation, both experimentally and theoretically. A 2D thermal model has been developed, allowing to interpret the complex (amplitude and phase) experimental frequency responses of various devices. In particular, the amplitude response can be described as a succession of f-1 and F-1/2 segments. Noise measurements show NEP and detectivity values reaching a very satisfactory level for granular films.

Paper Details

Date Published: 5 July 1996
PDF: 11 pages
Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); doi: 10.1117/12.250267
Show Author Affiliations
Alain J. Kreisler, Univ. de Paris VI and Univ. de Paris XI (France)
Alain Gaugue, Univ. de Paris VI and Univ. de Paris XI (France)
Zouhaier Ben Ayadi, Univ. de Paris VI and Univ. de Paris XI (France)
Annick Degardin, Univ. de Paris VI and Univ. de Paris XI (France)
Jean-Michel Depond, Univ. de Paris VI and Univ. de Paris XI (France)


Published in SPIE Proceedings Vol. 2697:
Oxide Superconductor Physics and Nano-Engineering II
Ivan Bozovic; Davor Pavuna, Editor(s)

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