Noise of high-Tc superconducting bolometers

Igor A. Khrebtov; Vladimir Nikolaevic Leonov; A. D. Tkachenko; Pavel V. Bratukhin; Andrey A. Ivanov; Alexander V. Kuznetsov; Helmut Neff; Erwin Steinbeiss

doi:10.1117/12.304492

8 April 1998 Noise of high-Tc superconducting bolometers

Igor A. Khrebtov, Vladimir Nikolaevic Leonov, A. D. Tkachenko, Pavel V. Bratukhin, Andrey A. Ivanov, Alexander V. Kuznetsov, Helmut Neff, Erwin Steinbeiss

Author Affiliations +

Proceedings Volume 3287, Photodetectors: Materials and Devices III; (1998) https://doi.org/10.1117/12.304492
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

The results of experimental and theoretical investigations of the noise properties of high-Tc superconducting films and bolometers are reported. YBaCuO and GdBaCuO films produced by magnetron and laser deposition on various substrates were studied. The effect of various noise components on the noise equivalent power (NEP) of different bolometers is considered. Structural, noise and critical current properties were investigated. Using the laser ablation YBaCuO films with very low noise Hooge's parameter close to 2 X 10^-4 was obtained. Experimental data are discussed on basis of the modern excess low frequency l/f models. Besides, the noise measurements of antenna YBaCuO microbolometers on NdGaO₃ substrate and GdBaCuO bolometers on Si-membrane are reported. The NEP equals 1.2 X 10^-11 W/Hz^1/2 at response time of 0.3 microsecond(s) for microbolometer and D* equals 3.8 X 10⁹ cmHz^1/2W^-1 at response time of 0.45 ms for bolometer on Si-membrane were reached. NEP of the bolometers is limited by only the phonon noise.

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Igor A. Khrebtov, Vladimir Nikolaevic Leonov, A. D. Tkachenko, Pavel V. Bratukhin, Andrey A. Ivanov, Alexander V. Kuznetsov, Helmut Neff, and Erwin Steinbeiss "Noise of high-Tc superconducting bolometers", Proc. SPIE 3287, Photodetectors: Materials and Devices III, (8 April 1998); https://doi.org/10.1117/12.304492

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