8 April 1998 Noise of high-Tc superconducting bolometers
Author Affiliations +
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/Hz1/2 at response time of 0.3 microsecond(s) for microbolometer and D* equals 3.8 X 109 cmHz1/2W-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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Igor A. Khrebtov, Igor A. Khrebtov, Vladimir Nikolaevic Leonov, Vladimir Nikolaevic Leonov, A. D. Tkachenko, A. D. Tkachenko, Pavel V. Bratukhin, Pavel V. Bratukhin, Andrey A. Ivanov, Andrey A. Ivanov, Alexander V. Kuznetsov, Alexander V. Kuznetsov, Helmut Neff, Helmut Neff, Erwin Steinbeiss, Erwin Steinbeiss, } "Noise of high-Tc superconducting bolometers", Proc. SPIE 3287, Photodetectors: Materials and Devices III, (8 April 1998); doi: 10.1117/12.304492; https://doi.org/10.1117/12.304492
PROCEEDINGS
12 PAGES


SHARE
Back to Top