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被动型氢原子钟原子跃迁谱线测试与分析
陈煜舒,帅涛,陈鹏飞
0
(中国科学院上海天文台,上海 200030;中国科学院大学天文与空间科学学院,北京 100049)
摘要:
被动型氢原子钟的原子跃迁谱线特性决定了其稳定度指标。为使其稳定度指标达到最优,通过设计数字式测试电路对氢原子钟物理部分进行探测,获得了不同参数配置下的原子跃迁谱线,并通过数据处理分析其信噪比、增益和线宽等特性,提出了一种参数优化方案,为原子钟闭环参数设置提供了依据。
关键词:  被动型氢原子钟  原子跃迁谱线  信噪比  增益  线宽
DOI:
基金项目:中国科学院青年创新促进会(2020264)
Measurement and Analysis for the Quantum Transition Spectral Line of Passive Hydrogen Maser
CHEN Yu-shu,SHUAI Tao,CHEN Peng-fei
(Shanghai Astronomy Observation, Chinese Academy of Science, Shanghai 200030, China; School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China)
Abstract:
The stability performance of the passive hydrogen maser (PHM) is determined by the properties of its quantum transition spectral line. In order to achieve the optimization of the stability performance, this paper introduces a design of measurement system comprised of digital devices, which interrogates the PHM's physical package, and obtains the quantum transition spectral lines in various parameters. An optimization is proposed via analysis of the properties of quantum transition spectral line such as signal-to-noise ratio (SNR), gain and linewidth, which provides the basis on setting the PHM's closed-loop parameters.
Key words:  Passive hydrogen maser  Quantum transition spectral line  Signal to noise ratio  Gain  Linewidth

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