Hilbert Spectral Analysis of THz Radiation Sources by High-Tc Josephson Detectors
Hilbert Spectral Analysis of THz Radiation Sources by High-Tc Josephson Detectors
复制标题
高温约瑟夫森探测器对太赫兹辐射源的希尔伯特光谱分析
DOI：
10.1016/j.phpro.2012.06.065
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
U. Poppe
中科院分区：
文献类型：
--
作者：
Y. Divin;M. Lyatti;U. Poppe
A Hilbert spectrum analyzer was developed and characterized with monochromatic radiation sources at the frequency range from 30GHz to 1 THz. The analyzer was based on a high-Tc frequency-selective Josephson detector and cooled to temperatures of 60-80K by a Stirling cryocooler. The instrumental function of the spectrum analyzer was shown to be of Lorentz type and within accuracy up to 0.1% without any harmonic and subharmonic contributions. Spectral characterization of THz sources, based on frequency multiplication of input microwave radiation by Schottky diodes, was demonstrated for input frequencies from 10 to 20GHz with a total scanning time as low as 50ms per scan. The developed Hilbert spectrum analyzer might be considered as a compact and high-speed substitute of conventional Fourier spectrometers, which are used for characterization of THz radiation sources in combination with liquid-helium-cooled silicon bolometers.
影响因子：
56.9
作者：
Ozyuzer, L.;Koshelev, A. E.;Welp, U.
通讯作者：
Welp, U.