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Frequency measurement of the ~(40)Ca~+ clock transition using a LD-based clock laser and UTC(NICT)

机译:使用基于LD的时钟激光器和UTC(NICT)对〜(40)Ca〜+时钟转换进行频率测量

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摘要

We developed an optical frequency standard with the 4 ~2S_(1/2)-3 ~2D_(5/2) electric quadrupole transition of ~(40)Ca~+ ions. Its absolute transition frequency is 411 042 129 776 390(±7) Hz. The accuracy is limited by the electric quadrupole shift and the ambient magnetic field fluctuation. To determine the absolute transition frequency with a better accuracy, we have observed two pairs of the symmetrically-splitting Zeeman components and measured the transition frequency corrected for the electric quadrupole shift. In addition, we are developing a magnetic-shielded ion-trap chamber to suppress the transition-line broadening caused by the magnetic field fluctuation.
机译:我们用〜(40)Ca〜+离子的4〜2S_(1/2)-3〜2D_(5/2)电四极跃迁开发了一个光频率标准。它的绝对跃迁频率为411042129776390(±7)Hz。精度受到电四极杆位移和环境磁场波动的限制。为了以更高的精度确定绝对跃迁频率,我们观察了两对对称分裂的塞曼分量,并测量了针对四极电移而校正的跃迁频率。此外,我们正在开发一种磁屏蔽离子阱室,以抑制由磁场波动引起的过渡线变宽。

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  • 来源
    《Time and frequency metrology II》|2009年|P.743108.1-743108.8|共8页
  • 会议地点 San Diego CA(US)
  • 作者单位

    National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, Japan 184-8795;

    rnNational Institute of Information and Communications Technology, 4-2-1 Nuk;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 时间与频率计量;
  • 关键词

    optical frequency standard; ion trap; calcium ion; frequency stabilization; electric quadrupole shift;

    机译:光学频率标准;离子阱钙离子频率稳定电四极移位;

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