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Prospect for Precision Measurement of the Yb²⁺ ¹S₀-³P₀[o] Transition Frequency

N. Kimura, Masatoshi Kajita

Journal of the Physical Society of JapanJun 1, 20210 citations

Absolute measurement of the 2S1/2 - 2D5/2 411nm interval, and the search for the 2S1/2 - 2F7/2 467nm transition in laser-cooled trapped 172Yb+.

Peter M. W. Gill, H. Arthur Klein, M. W. Roberts +2 more

Jan 1, 19960 citations

Improved absolute frequency measurement of the 115In+ 5s 2 1 S 0-5s5p 3 P 0 narrowline transition: Progress towards an optical frequency standard

Y. H. Wang, Tao Liu, Rainer Dumke +7 more

We report on an improved absolute frequency measurement of the 5s 2 1 S 00-5s5p 3 P 0 narrowline clock transition at 236.5 nm, for a single, trapped, and laser-cooled 115In ion. Using a narrowline laser as the local oscillator, a linewidth of 43 Hz for the transition is resolved. The uncertainty of the transition frequency’s centroid is 18 Hz, leading to a fractional uncertainty of 1.4 × 10−14. For absolute frequency measurement, we use an optical frequency comb locked to a cesium clock as the reference. The transition frequency is found to be 1267402452900967(63) Hz, averaged over 13 days of separate measurements. The accuracy is about 5.0 × 10−14. We discuss possibilities for further improvement.We report on an improved absolute frequency measurement of the 5s 2 1 S 00-5s5p 3 P 0 narrowline clock transition at 236.5 nm, for a single, trapped, and laser-cooled 115In ion. Using a narrowline laser as the local oscillator, a linewidth of 43 Hz for the transition is resolved. The uncertainty of the transition frequency’s centroid is 18 Hz, leading to a fractional uncertainty of 1.4 × 10−14. For absolute frequency measurement, we use an optical frequency comb locked to a cesium clock as the reference. The transition frequency is found to be 1267402452900967(63) Hz, averaged over 13 days of separate measurements. The accuracy is about 5.0 × 10−14. We discuss possibilities for further improvement.

Laser PhysicsJul 1, 200710 citations

Theoretical study on the polarizabilities of 5s2 1S0 and 5s5p 3P0 states of 87Sr atom

Ru-Kui Zhang, Tang Yong-Bo, Jiang Jun +1 more

本文利用相对论组态相互作用结合多体微扰理论方法（RCI+MBPT），对 87Sr 原子的能级和电偶极跃迁矩阵元、 5s2 1S0、 5s5p 3P0 态的极化率、幻零波长及 5s2 1S0→5s5p 3P0 钟跃迁魔幻波长进行了计算，得到的结果与实验测量值及其他理论计算结果符合的很好。并进一步计算了 87Sr 原子的超精细结构常数和超精细相互作用能，详细研究了超精细相互作用对5s2 1S0 和 5s5p 3P0 态的极化率、幻零波长以及 5s2 1S0→5s5p 3P0 钟跃迁魔幻波长的影响，与不考虑超精细相互作用的结果进行了对比，发现超精细相互作用对 5s2 1S0和 5s5p 3P0 态的极化率的影响在 10−4a.u.量级，对 5s21S0→5s5p 3P0 钟跃迁魔幻波长的影响在 0.001 nm 量级，这些理论计算结果为进一步发展高精度的 87Sr 原子光钟提供参考。本文利用相对论组态相互作用结合多体微扰理论方法（RCI+MBPT），对 87Sr 原子的能级和电偶极跃迁矩阵元、 5s2 1S0、 5s5p 3P0 态的极化率、幻零波长及 5s2 1S0→5s5p 3P0 钟跃迁魔幻波长进行了计算，得到的结果与实验测量值及其他理论计算结果符合的很好。并进一步计算了 87Sr 原子的超精细结构常数和超精细相互作用能，详细研究了超精细相互作用对5s2 1S0 和 5s5p 3P0 态的极化率、幻零波长以及 5s2 1S0→5s5p 3P0 钟跃迁魔幻波长的影响，与不考虑超精细相互作用的结果进行了对比，发现超精细相互作用对 5s2 1S0和 5s5p 3P0 态的极化率的影响在 10−4a.u.量级，对 5s21S0→5s5p 3P0 钟跃迁魔幻波长的影响在 0.001 nm 量级，这些理论计算结果为进一步发展高精度的 87Sr 原子光钟提供参考。

Acta Physica SinicaOct 8, 20260 citations

Line shape simulation and saturated absorption spectroscopic measurement of Rb–D2 transition

Dipankar Bhattacharyya, Bibhas Kumar Dutta, Biswajit Ray +1 more

Chemical Physics LettersApr 3, 200420 citations

Accurate Determination of the Landé g-Factors for 5s2 1S0 and 5s5p 3P0 States of the 87Sr Atom

Benquan Lu, Yebing Wang, Qinfang Xu +2 more

In the ultra-cold 87Sr atomic system, the Zeeman shift of the clock transition was measured with the σ±-polarized interrogation to accurately determine the g-factors of the 5s2 1S0 and 5s5p 3P0 states.

Conference on Lasers and Electro-OpticsJan 1, 20180 citations

Absolute frequency measurement and high resolution spectroscopy of 115In+ 5s2 1S0–5s5p 3P0 narrowline transition

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