Noise properties of high-T<sub>c</sub> superconducting transition edge bolometers with electrothermal feedback

Igor A. Khrebtov; Konstantin V. Ivanov; Valery G. Malyarov

doi:10.1117/12.725356

22 June 2007 Noise properties of high-T_c superconducting transition edge bolometers with electrothermal feedback

Igor A. Khrebtov, Konstantin V. Ivanov, Valery G. Malyarov

Proceedings Volume 6600, Noise and Fluctuations in Circuits, Devices, and Materials; 660014 (2007) https://doi.org/10.1117/12.725356
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy

Abstract

Numerical and experimental modeling of the characteristics (sensitivity, constant time, noise properties) of high-T_c 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.

Citation Download Citation

Igor A. Khrebtov, Konstantin V. Ivanov, and Valery G. Malyarov "Noise properties of high-T_c superconducting transition edge bolometers with electrothermal feedback", Proc. SPIE 6600, Noise and Fluctuations in Circuits, Devices, and Materials, 660014 (22 June 2007); https://doi.org/10.1117/12.725356

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