利用传输腔技术实现镱原子光钟光晶格场的频率稳定

发布时间：2018-04-12 15:23

本文选题：镱原子光钟 + 光晶格场　；参考：《物理学报》2017年16期

【摘要】：为了获得高稳定度和高精确度的原子光晶格钟,光晶格场的频率必须得到锁定,线宽必须控制到特定水平用来消除交流斯塔克频移.本文提出利用传输腔技术来实现对镱原子光钟的光晶格场的频率锁定和抑制频率长期漂移的锁定方案.首先,将一个殷钢材料的传输腔锁定在基于调制转移谱技术锁定的780 nm激光场上,再将759 nm的光晶格光场锁定在传输腔上.实验结果表明,光晶格光场的线宽可以锁定和控制在1 MHz以下.光晶格光场与锁定于氢钟的光梳拍频结果显示,光晶格光场的长期频率稳定度优于3.6×10~(-10),可以确保实现镱原子光钟的不确定度进入10~(-17).
[Abstract]:In order to obtain a highly stable and accurate atomic optical lattice clock the frequency of the optical lattice field must be locked and the linewidth must be controlled to a specific level to eliminate the AC Stark shift.In this paper, a scheme of frequency locking of optical lattice field of ytterbium atomic clock and a locking scheme to suppress the long term drift of frequency are proposed by using the technology of transmission cavity.Firstly, the transmission cavity of an Yin steel material is locked in a 780nm laser field based on the modulation transfer spectrum technique, and then the 759nm optical lattice field is locked on the transmission cavity.The experimental results show that the linewidth of the optical lattice field can be locked and controlled below 1 MHz.The optical lattice light field and the light comb beat frequency of the hydrogen clock show that the long-term frequency stability of the optical lattice light field is better than 3.6 脳 10 ~ (-10) -10 ~ (-1), which can ensure the uncertainty of realizing ytterbium atomic clock to reach 10 ~ (17).
【作者单位】：中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室;中国科学院原子频标重点实验室;中国科学院大学;
【基金】：国家自然科学基金(批准号:61227805,11574352,91536104,91636215) B类战略性先导科技专项(批准号:XDB21030700)资助的课题~~
【分类号】：O562

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