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Proceedings Paper

HTC microbolometer for far-infrared detection
Author(s): Claus Barholm-Hansen; Mogens T. Levinsen
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Paper Abstract

A high-Tc superconducting microbolometer has been constructed using a Y1Ba2Cu3Ox thin film deposited on a MgO substrate. Radiation is coupled to the 20 micrometers and 4 micrometers wide bolometer by means of a logarithmic periodic antenna designed for use in the 90 micrometers to 600 micrometers wavelength band. The bolometer response to a 570 K blackbody was measured at 500 Hz. The responsivity was found to be 25 V/W with an NEP of 4 * 10-10 W/Hz1/2 assuming an absorptivity value of 1. Excess noise is seen to behave proportional to 1/f(alpha ), with (alpha) close to one.

Paper Details

Date Published: 1 September 1991
PDF: 8 pages
Proc. SPIE 1512, Infrared and Optoelectronic Materials and Devices, (1 September 1991); doi: 10.1117/12.47166
Show Author Affiliations
Claus Barholm-Hansen, Univ. of Copenhagen and Topsil Semiconductor Materials (Denmark)
Mogens T. Levinsen, Univ. of Copenhagen (Denmark)

Published in SPIE Proceedings Vol. 1512:
Infrared and Optoelectronic Materials and Devices
Ahmed Naumaan; Carlo Corsi; Joseph M. Baixeras; Alain J. Kreisler, Editor(s)

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