Exploiting the two-dimensional magneto-optical trapping of 199Hg for a mercury optical lattice clock

被引：3

作者：

Guo, Changlei ^{[1
]}

Cambier, Valentin ^{[1
]}

Calvert, James ^{[1
]}

Favier, Maxime ^{[1
]}

Andia, Manuel ^{[1
]}

de Sarlo, Luigi ^{[1
]}

Bize, Sebastien ^{[1
]}

机构：

[1] Sorbonne Univ, Univ PSL, LNE SYRTE, Observ Paris, 61 Ave Observ, F-75014 Paris, France

来源：

PHYSICAL REVIEW A | 2023年 / 107卷 / 03期

关键词：

FREQUENCY; NOISE; LASER;

D O I：

10.1103/PhysRevA.107.033116

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two-dimensional magneto-optical trapping (2D-MOT) is an efficient tool for generating a high flux of precooled atoms. A 2D-MOT for mercury (Hg) is so far missing despite the potential of this atomic species in several areas. Here, we present the characterization of a 2D-MOT for Hg enabled by addressing the 1S0- 3P1 laser cooling transition at 254 nm. The laser source based on an ytterbium-doped fiber amplifier has low-frequency noise and high reliability. Parameters affecting the efficiency of the 2D-MOT are studied, i.e., optical trapping power, push beam power, cooling laser frequency detuning, and magnetic-field gradient. When used with a Hg optical lattice clock, the 2D-MOT increases by a factor of 4.5, the rate of preparation of the atomic samples, yielding an improved clock short term stability of 6.4 x 10-16 at 1 s.

引用

页数：7

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