The NIM Sr Optical Lattice Clock

Y. Lin; Q. Wang; Y. Li; F. Meng; B. Lin; E. Zang; Z. Sun; F. Fang; T. Li; Z. Fang

doi:10.1088/1742-6596/723/1/012021

The NIM Sr Optical Lattice Clock

Y. Lin, Q. Wang, Y. Li, F. Meng, B. Lin, E. Zang, Z. Sun, F. Fang, T. Li, Z. Fang

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

A ⁸⁷Sr optical lattice clock is built at the National Institute of Metrology (NIM) of China. The atoms undergo two stages of laser cooling before being loaded into a horizontal optical lattice at the magic wavelength of 813 nm. After being interrogated by a narrow linewidth 698 nm clock laser pulse, the normalized excitation rate is measured to get the frequency error, which is then used to lock the clock laser to the ultra-narrow ¹S₀-³P₀ clock transition. The total systematic uncertainty of the clock is evaluated to be 2.3 × 10^-16, and the absolute frequency of the clock is measured to be 429 228 004 229 873.7(1.4) Hz with reference to the NIM5 cesium fountain.

Original language	English
Article number	012021
Journal	Journal of Physics: Conference Series
Volume	723
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/723/1/012021
Publication status	Published - 4 Jul 2016
Externally published	Yes
Event	8th Symposium on Frequency Standards and Metrology 2015 - Potsdam, Germany Duration: 12 Oct 2015 → 16 Oct 2015

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title = "The NIM Sr Optical Lattice Clock",

abstract = "A 87Sr optical lattice clock is built at the National Institute of Metrology (NIM) of China. The atoms undergo two stages of laser cooling before being loaded into a horizontal optical lattice at the magic wavelength of 813 nm. After being interrogated by a narrow linewidth 698 nm clock laser pulse, the normalized excitation rate is measured to get the frequency error, which is then used to lock the clock laser to the ultra-narrow 1S0-3P0 clock transition. The total systematic uncertainty of the clock is evaluated to be 2.3 × 10-16, and the absolute frequency of the clock is measured to be 429 228 004 229 873.7(1.4) Hz with reference to the NIM5 cesium fountain.",

author = "Y. Lin and Q. Wang and Y. Li and F. Meng and B. Lin and E. Zang and Z. Sun and F. Fang and T. Li and Z. Fang",

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T1 - The NIM Sr Optical Lattice Clock

AU - Lin, Y.

AU - Wang, Q.

AU - Li, Y.

AU - Meng, F.

AU - Lin, B.

AU - Zang, E.

AU - Sun, Z.

AU - Fang, F.

AU - Li, T.

AU - Fang, Z.

PY - 2016/7/4

Y1 - 2016/7/4

N2 - A 87Sr optical lattice clock is built at the National Institute of Metrology (NIM) of China. The atoms undergo two stages of laser cooling before being loaded into a horizontal optical lattice at the magic wavelength of 813 nm. After being interrogated by a narrow linewidth 698 nm clock laser pulse, the normalized excitation rate is measured to get the frequency error, which is then used to lock the clock laser to the ultra-narrow 1S0-3P0 clock transition. The total systematic uncertainty of the clock is evaluated to be 2.3 × 10-16, and the absolute frequency of the clock is measured to be 429 228 004 229 873.7(1.4) Hz with reference to the NIM5 cesium fountain.

AB - A 87Sr optical lattice clock is built at the National Institute of Metrology (NIM) of China. The atoms undergo two stages of laser cooling before being loaded into a horizontal optical lattice at the magic wavelength of 813 nm. After being interrogated by a narrow linewidth 698 nm clock laser pulse, the normalized excitation rate is measured to get the frequency error, which is then used to lock the clock laser to the ultra-narrow 1S0-3P0 clock transition. The total systematic uncertainty of the clock is evaluated to be 2.3 × 10-16, and the absolute frequency of the clock is measured to be 429 228 004 229 873.7(1.4) Hz with reference to the NIM5 cesium fountain.

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The NIM Sr Optical Lattice Clock

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