被动型微波原子钟钟跃迁谱线测量技术研究

Study on the measurement technology of clock transition spectrum line of passive microwave atomic clock

以原子超精细能级跃迁谱线为频率参考,被动型原子钟通过伺服控制技术实现对本地压控振荡器控制。因此,原子跃迁谱线的特性直接决定了原子钟的频率稳定度。基于被动型原子钟的基本工作原理与微弱信号提取方法,本文建立了原子钟谱线测量与闭环研究系统。基于该系统不仅成功实现了连续型原子钟,如铷原子钟、单频调制被动型氢原子钟钟跃迁谱线的精密测量,还将其扩展到时序型汞离子钟钟跃迁谱线的提取与测量。该系统为快速测量评估钟跃迁谱线提供了可能,也为后续产品研制奠定了坚实基础。

Based on the frequency reference of atomic hyperfine level transition lines,the local voltage controlled crystal oscillator is controlled by the servo control technology in the passive atomic clock.Therefore,the performance of atomic transition lines directly determines the frequency stability of the atomic clock.In this paper,based on the basic principle of passive atomic clock and the method of weak signal extraction,the measurement and closed-loop research of atomic clock spectral lines are successfully established.Based on this system,not only the precise measurement of the transition spectrum of continuous atomic clock such as rubidium atomic clock and single frequency modulation passive hydrogen atomic clock is successfully realized,but also it is extended to the extraction and measurement of the transition spectrum of sequential mercury ion clock.The system not only provides the possibility for rapid measurement and evaluation of clock transition spectrum,but also lays a solid foundation for subsequent product development.