An improved strontium lattice clock with 10-16 level laser frequency stabilization

Ye Li; Yige Lin; Qiang Wang; Tao Yang; Zhen Sun; Erjun Zang; Zhanjun Fang

doi:10.3788/COL201816.051402

An improved strontium lattice clock with 10-16 level laser frequency stabilization

Ye Li^*, Yige Lin, Qiang Wang, Tao Yang, Zhen Sun, Erjun Zang, Zhanjun Fang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

A clock laser based on a 30-cm-long ultrahigh finesse optical cavity was developed to improve the frequency stability of the Sr optical lattice clock at the National Institute of Metrology. Using this clock laser to probe the spin-polarized ⁸⁷Sr atoms, a Rabi transition linewidth of 1.8 Hz was obtained with 500 ms interrogation time. Two independent digital servos are used to alternatively lock the clock laser to the ¹S₀ (m_F =+9/2) → ³P₀ (m_F = +9/2) transition. The Allan deviation shows that the short-term frequency stability is better than 3.2 × 10^-16 and averages down followed by 1:8 × 10^-15/ p√τ.

Original language	English
Article number	051402
Journal	Chinese Optics Letters
Volume	16
Issue number	5
DOIs	https://doi.org/10.3788/COL201816.051402
Publication status	Published - 10 May 2018
Externally published	Yes

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title = "An improved strontium lattice clock with 10-16 level laser frequency stabilization",

abstract = "A clock laser based on a 30-cm-long ultrahigh finesse optical cavity was developed to improve the frequency stability of the Sr optical lattice clock at the National Institute of Metrology. Using this clock laser to probe the spin-polarized 87Sr atoms, a Rabi transition linewidth of 1.8 Hz was obtained with 500 ms interrogation time. Two independent digital servos are used to alternatively lock the clock laser to the 1S0 (mF =+9/2) → 3P0 (mF = +9/2) transition. The Allan deviation shows that the short-term frequency stability is better than 3.2 × 10-16 and averages down followed by 1:8 × 10-15/ p√τ.",

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AU - Li, Ye

AU - Lin, Yige

AU - Wang, Qiang

AU - Yang, Tao

AU - Sun, Zhen

AU - Zang, Erjun

AU - Fang, Zhanjun

PY - 2018/5/10

Y1 - 2018/5/10

N2 - A clock laser based on a 30-cm-long ultrahigh finesse optical cavity was developed to improve the frequency stability of the Sr optical lattice clock at the National Institute of Metrology. Using this clock laser to probe the spin-polarized 87Sr atoms, a Rabi transition linewidth of 1.8 Hz was obtained with 500 ms interrogation time. Two independent digital servos are used to alternatively lock the clock laser to the 1S0 (mF =+9/2) → 3P0 (mF = +9/2) transition. The Allan deviation shows that the short-term frequency stability is better than 3.2 × 10-16 and averages down followed by 1:8 × 10-15/ p√τ.

AB - A clock laser based on a 30-cm-long ultrahigh finesse optical cavity was developed to improve the frequency stability of the Sr optical lattice clock at the National Institute of Metrology. Using this clock laser to probe the spin-polarized 87Sr atoms, a Rabi transition linewidth of 1.8 Hz was obtained with 500 ms interrogation time. Two independent digital servos are used to alternatively lock the clock laser to the 1S0 (mF =+9/2) → 3P0 (mF = +9/2) transition. The Allan deviation shows that the short-term frequency stability is better than 3.2 × 10-16 and averages down followed by 1:8 × 10-15/ p√τ.

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DO - 10.3788/COL201816.051402

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JO - Chinese Optics Letters

JF - Chinese Optics Letters

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An improved strontium lattice clock with 10-16 level laser frequency stabilization

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