NDLI: Substrate and Device Pattern Dependence of the Thermal Crosstalk in Y Ba<formula formulatype=inline><tex>$_2$</tex></formula>Cu<formula formulatype=inline> <tex>$_3$</tex></formula>O<formula formulatype=inline><tex>$_{7-delta}$</tex> </formula> Transition Edge Bolometer Arrays

Content Provider	IEEE Xplore Digital Library
Author	Bozbey, A. Fardmanesh, M. Schubert, J. Banzet, M.
Copyright Year	2002
Abstract	Using YBa₂Cu₃O_7-delta (YBCO) thin films, pulsed laser deposited on 1-mm-thick LaAlO₃ or SrTiO₃ substrates, we made 4times1 pixel arrays of transition edge bolometers with separations between neighboring pixels ranging from 40 mum to 170 mum for testing purposes. We investigated the effects of the YBCO film thickness (200 and 400 nm), substrate material, and back-etching of the substrate, on the crosstalk between the pixels of the arrays. The investigation was based on the analysis of the voltage response of the dc current biased bolometers versus the modulation frequency of a near-infrared laser source. We observed that the bolometer arrays made of 400-nm-thick films had less interpixel thermal crosstalk than the 200-nm-thick films. The effect of substrate thickness on the response of the pixels was investigated by up to 500 mum back-etching of the substrates. The bolometers made on back-etched LaAlO₃ substrates had anomalous crosstalk response behavior, which was effective at higher modulation frequencies. In addition, we present an analytical thermal model for explaining the observed effects of the thermal crosstalk on the response characteristics of the pixels of the arrays. We report the measured response and the anticipated thermal crosstalk of the characterized bolometers'. We describe the responses based on the thermal models and discrepancies from the model's predictions
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1953
Ending Page	1958
Page Count	6
File Size	551724
File Format	PDF
ISSN	10518223
Volume Number	16
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crosstalk Substrates Bolometers Yttrium barium copper oxide Pulsed laser deposition Frequency modulation Predictive models Sputtering Optical pulses Laser transitions thermal crosstalk Bolometer array infrared detector Superconductivity thermal conductivity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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