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Superconductivity transition dependence of the thermal crosstalk in YBa/sub 2/Cu/sub 3/O/sub 7-x/ edge-transition bolometer arrays

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4 Author(s)
Bozbey, A. ; Electr. & Electron. Eng. Dept., Bilkent Univ., Ankara ; Fardmanesh, M. ; Schubert, J. ; Banzet, M.

The effect of the superconductivity transition on the thermal crosstalk in YBa2Cu3O7-x edge-transition bolometer arrays is investigated for DC to midrange modulation frequency infrared radiation. The bolometers in the arrays were designed with various distances on SrTiO3 (100) substrates. We have observed a change in the thermal crosstalk between neighbor devices through the superconductivity transition temperature range. Superconductivity transition dependence of the thermal coupling between the devices was measured by utilizing the thermal conductance measurement methods developed for the bulk material. The knee points in the magnitude of the response versus modulation frequency curves of the devices were also determined by illuminating one of the bolometers in the arrays and measuring the response of the neighbor devices. By using the knee frequency and the distance between the bolometers, the modulation frequency criterion for crosstalk-free response at the transition region in various array structures is found and the results of the thermal coupling measurements are further studied and presented here

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:16 ,  Issue: 1 )

Date of Publication:

March 2006

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