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Proceedings Paper

Noise properties of high-Tc superconducting transition edge bolometers with electrothermal feedback
Author(s): Igor A. Khrebtov; Konstantin V. Ivanov; Valery G. Malyarov
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Paper Abstract

Numerical and experimental modeling of the characteristics (sensitivity, constant time, noise properties) of high-Tc transition edge superconducting bolometers, operating in the various modes with an electrothermal feedback, are carried out: the mode with constant bias current, i.e. passive positive electrothermal feedback, the mode with constant bias voltage, i.e. passive negative electrothermal feedback and the mode with active electronic negative electrothermal feedback . It is shown, that in the modes with negative electrothermal feedback it is possible essentially to reduce constant time of bolometers till 5-15 of times in at some prize of the noise equivalent power on high frequencies. The estimation of influence of various noise components on a performance of the bolometers, operating with positive or negative electrothermal feedbacks, is carried out at the variation of bolometer parameters.

Paper Details

Date Published: 22 June 2007
PDF: 12 pages
Proc. SPIE 6600, Noise and Fluctuations in Circuits, Devices, and Materials, 660014 (22 June 2007); doi: 10.1117/12.725356
Show Author Affiliations
Igor A. Khrebtov, Vavilov State Optical Institute (Russia)
Konstantin V. Ivanov, Vavilov State Optical Institute (Russia)
Valery G. Malyarov, Vavilov State Optical Institute (Russia)

Published in SPIE Proceedings Vol. 6600:
Noise and Fluctuations in Circuits, Devices, and Materials
Massimo Macucci; Lode K.J. Vandamme; Carmine Ciofi; Michael B. Weissman, Editor(s)

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