Ultra fast combined bolometric and non-bolometric infrared detector
- LETI-CEA, Grenoble (France)
- DAM-CEA, Villeneuve St. Georges (France)
- DAM-CEA, Bruyeres le Chatel (France)
Electrical photoresponse measurements on a Corbino type structure with thin epitaxial YBaCuO layer have been previously reported. They showed a very fast inductive reaction (rise time {<=}12ps, width 29ps), followed by the bolometric heating effect. New detector structures based on coplanar lines have been experimented with similar experimental apparatus. The performances of the different geometries of detector will be compared in terms of magnitude and sharpness of the inductive non-equilibrium voltage peek, and of bolometric relaxation constants. The influence of bias current, incident power, and operating temperature on the photoresponse mechanisms will be discussed. The feasibility of applying this type of fast superconducting detectors to far infrared radiation measurements has been demonstrated by using a Free Electron Laser pulses at a wavelength of 20{micro}m. The detector may be used as two simultaneous different sensors for describing very fast optical pulse: the fast part of the response voltage represents the envelope of the incident pulse, while the bolometric part is significant for the incident energy.
- OSTI ID:
- 86178
- Report Number(s):
- CONF-940142-; ISBN 0-8194-1454-9; TRN: IM9534%%250
- Resource Relation:
- Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of High-temperature superconducting detectors: Bolometric and nonbolometric. Proceedings SPIE Volume 2159; Nahum, M.; Villegier, J.C. [eds.]; PB: 201 p.
- Country of Publication:
- United States
- Language:
- English
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