HTC microbolometer for far-infrared detection

Claus Barholm-Hansen; Mogens T. Levinsen

doi:10.1117/12.47166

1 September 1991 HTC microbolometer for far-infrared detection

Claus Barholm-Hansen, Mogens T. Levinsen

Proceedings Volume 1512, Infrared and Optoelectronic Materials and Devices; (1991) https://doi.org/10.1117/12.47166
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

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.

Citation Download Citation

Claus Barholm-Hansen and Mogens T. Levinsen "HTC microbolometer for far-infrared detection", Proc. SPIE 1512, Infrared and Optoelectronic Materials and Devices, (1 September 1991); https://doi.org/10.1117/12.47166

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