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Proceedings Paper

Noise and specific detectivity measurements on high-temperature superconducting transition-edge bolometers
Author(s): Robert D. Black; Antonio Mogro-Campero; Lawrence G. Turner
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Paper Abstract

The effects of thermal fluctuation noise in thermal detectors can be lessened by reducing heat capacity and thermal conductance. An attempt to accomplish this with the YBa2Cu3O(7-x) (YBCO) bolometer by making YBCO resistors on thermally isolated membranes is reported. The spectral power of the electrical noise of YBCO films on SrTiO3, bulk silicon with a buffer layer, and in thin dielectric membranes is measured. It is found that 1/f noise predominates in polycrystalline YBCO films on silicon-based substrates. Films on SrTiO3 with good electrical properties are dominated by thermal fluctuation noise, just as in the case of low-temperature superconductors. The implications of these findings for bolometer are addressed. The specific detectivity of a bolometric pixel made on bulk SrTiO3 is reported.

Paper Details

Date Published: 1 October 1990
PDF: 5 pages
Proc. SPIE 1292, Superconductivity Applications for Infrared and Microwave Devices, (1 October 1990); doi: 10.1117/12.21039
Show Author Affiliations
Robert D. Black, General Electric Co. (United States)
Antonio Mogro-Campero, General Electric Co. (United States)
Lawrence G. Turner, General Electric Co. (United States)

Published in SPIE Proceedings Vol. 1292:
Superconductivity Applications for Infrared and Microwave Devices
Kul B. Bhasin; Vernon O. Heinen, Editor(s)

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