The development towards the optical lattice clock of strontium atom in National Time Service Center

X. Tian; Y. B. Wang; H. Liu; F. Gao; J. Ren; B. Q. Lu; Q. F. Xu; Y. L. Xie; H. Chang

doi:10.1117/12.2068993

21 August 2014 The development towards the optical lattice clock of strontium atom in National Time Service Center

X. Tian, Y. B. Wang, H. Liu, F. Gao, J. Ren, B. Q. Lu, Q. F. Xu, Y. L. Xie, H. Chang

Proceedings Volume 9233, International Symposium on Photonics and Optoelectronics 2014; 92330I (2014) https://doi.org/10.1117/12.2068993
Event: International Symposium on Photonics and Optoelectronics (SOPO 2014), 2014, Suzhou, China

Abstract

At present the optical clock with accuracy and stability achieves to 10^-18 level, which could be the next generation of time and frequency standard. This paper gives an introduction of the progress of researching on the optical lattice clock of Strontium atom in NTSC (National Time Service Center). We realize the (5s5s)¹S₀—(5s5p)¹P₁ cooling (blue MOT) and (5s5s)¹S₀—(5s5p)³P₁ cooling (red MOT) in succession for the optical lattice clock, and loading these cold atoms in a lattice composed by a magic wave-length is studied. By using our narrow line-width diode laser and the fiber femtosecond optical frequency comb, we precisely measure the absolute frequencies of the inter-combination transitions (5s5s)¹S₀—(5s5p)³P₁ of four isotopes of Strontium referenced to an H maser.

Citation Download Citation

X. Tian, Y. B. Wang, H. Liu, F. Gao, J. Ren, B. Q. Lu, Q. F. Xu, Y. L. Xie, and H. Chang "The development towards the optical lattice clock of strontium atom in National Time Service Center", Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 92330I (21 August 2014); https://doi.org/10.1117/12.2068993

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