Phase-locking of a terahertz solid-state source using a superconducting hot-electron bolometer mixer

Phase-locking of a terahertz solid-state source using a superconducting hot-electron bolometer mixer
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使用超导热电子测辐射热计混合器对太赫兹固态源进行锁相

DOI:
10.1088/0953-2048/26/8/085005
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发表时间:
2013-08
影响因子:
3.6
通讯作者:
S.C. Shi
S.C. Shi
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
W Miao;W Zhang;K.M. Zhou;S.L. Li;K Zhang;W.Y. Duan;Q.J. Yao;S.C. Shi

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我们报告的方案,本振的太赫兹外差接收机(本振)可以被锁定的外差接收机的混频器。该方案被证明是一个847.6 GHz的古恩振荡器和乘法器链组合源与超导热电子测辐射热计(HEB)混频器的锁相。我们表明,与这种技术的锁相拍频信号可以达到一个信号噪声比高于70 dB的分辨率带宽(RBW)为1 Hz。这种相位锁定方案应该在太赫兹外差光谱仪中得到很好的应用。
We report on a scheme whereby the local-oscillator (LO) of a THz heterodyne receiver can be phase-locked by the mixer of the heterodyne receiver. This scheme is demonstrated for the phase-locking of an 847.6 GHz Gunn oscillator and multiplier chain combined source with a superconducting hot-electron bolometer (HEB) mixer. We show that with this technique the phase-locked beat signal can reach a signal-to-noise ratio higher than 70 dB in a resolution bandwidth (RBW) of 1 Hz. This phase-locking scheme should find good use in THz heterodyne spectrometers.
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