6Li原子跃迁频率和超精细分裂的精密测量

Yue Long Wu; Rui Li; Yang Rui; Hai Feng Jiang; Hai Bin Wu

doi:10.7498/aps.67.20181021

⁶Li原子跃迁频率和超精细分裂的精密测量

Translated title of the contribution: Precise measurement of 6Li transition frequencies and hyperfine splitting

Yue Long Wu
, Rui Li
, Yang Rui
, Hai Feng Jiang
, Hai Bin Wu^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

In this paper, we report a precision measurement of hyperfine splitting and absolute frequency of D₁ line in cold ⁶Li atoms. The gray molasses is realized in the experiment and the tempreature is cooled to about 50μK, which is lower than the Doppler cooling limit, 140μK. By use of an optical comb, the absolute frequencies and corresponding hyperfine splitting are measured. We obtain frequencies of 446789503.080(35) MHz, 446789529.198(36) MHz, 446789731.316(50) MHz and 446789757.476(29) MHz for the D1 line. The results are in reasonable agreement with the theoretical calculations and consistent with earlier measurements. They could provide an important foundation for future frequency measurement, α constant and nuclear radius.

Translated title of the contribution	Precise measurement of 6Li transition frequencies and hyperfine splitting
Original language	Chinese (Traditional)
Article number	163201
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	67
Issue number	16
DOIs	https://doi.org/10.7498/aps.67.20181021
State	Published - 20 Aug 2018
Externally published	Yes

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@article{bd171496a646481bbf2d5147ab68bc66,

title = "6Li原子跃迁频率和超精细分裂的精密测量",

abstract = "In this paper, we report a precision measurement of hyperfine splitting and absolute frequency of D1 line in cold 6Li atoms. The gray molasses is realized in the experiment and the tempreature is cooled to about 50μK, which is lower than the Doppler cooling limit, 140μK. By use of an optical comb, the absolute frequencies and corresponding hyperfine splitting are measured. We obtain frequencies of 446789503.080(35) MHz, 446789529.198(36) MHz, 446789731.316(50) MHz and 446789757.476(29) MHz for the D1 line. The results are in reasonable agreement with the theoretical calculations and consistent with earlier measurements. They could provide an important foundation for future frequency measurement, α constant and nuclear radius.",

keywords = "Gray molasses, Li cold atoms, Optical comb, Precision measurement",

author = "Wu, \{Yue Long\} and Rui Li and Yang Rui and Jiang, \{Hai Feng\} and Wu, \{Hai Bin\}",

note = "Publisher Copyright: {\textcopyright} 2018 Chinese Physical Society.",

year = "2018",

month = aug,

day = "20",

doi = "10.7498/aps.67.20181021",

language = "繁体中文",

volume = "67",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Institute of Physics, Chinese Academy of Sciences",

number = "16",

}

TY - JOUR

T1 - 6Li原子跃迁频率和超精细分裂的精密测量

AU - Wu, Yue Long

AU - Li, Rui

AU - Rui, Yang

AU - Jiang, Hai Feng

AU - Wu, Hai Bin

PY - 2018/8/20

Y1 - 2018/8/20

N2 - In this paper, we report a precision measurement of hyperfine splitting and absolute frequency of D1 line in cold 6Li atoms. The gray molasses is realized in the experiment and the tempreature is cooled to about 50μK, which is lower than the Doppler cooling limit, 140μK. By use of an optical comb, the absolute frequencies and corresponding hyperfine splitting are measured. We obtain frequencies of 446789503.080(35) MHz, 446789529.198(36) MHz, 446789731.316(50) MHz and 446789757.476(29) MHz for the D1 line. The results are in reasonable agreement with the theoretical calculations and consistent with earlier measurements. They could provide an important foundation for future frequency measurement, α constant and nuclear radius.

AB - In this paper, we report a precision measurement of hyperfine splitting and absolute frequency of D1 line in cold 6Li atoms. The gray molasses is realized in the experiment and the tempreature is cooled to about 50μK, which is lower than the Doppler cooling limit, 140μK. By use of an optical comb, the absolute frequencies and corresponding hyperfine splitting are measured. We obtain frequencies of 446789503.080(35) MHz, 446789529.198(36) MHz, 446789731.316(50) MHz and 446789757.476(29) MHz for the D1 line. The results are in reasonable agreement with the theoretical calculations and consistent with earlier measurements. They could provide an important foundation for future frequency measurement, α constant and nuclear radius.

KW - Gray molasses

KW - Li cold atoms

KW - Optical comb

KW - Precision measurement

UR - https://www.scopus.com/pages/publications/85057251808

U2 - 10.7498/aps.67.20181021

DO - 10.7498/aps.67.20181021

M3 - 文章

AN - SCOPUS:85057251808

SN - 1000-3290

VL - 67

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 16

M1 - 163201

ER -

⁶Li原子跃迁频率和超精细分裂的精密测量

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