Optimization of Buffer Gas Compositions in Atomic Vapor Cell for Coherent Population Trapping Atomic Clock

被引：0

作者：

Li Yunchao ^{[1
,2
]}

Hu Xuwen ^{[1
,2
]}

Zhang Lu ^{[1
,2
]}

Liu Zhaojun ^{[1
,2
]}

Zhang Kaifang ^{[1
,2
]}

Mou Shihao ^{[1
,2
]}

Yan Shubin ^{[1
,2
]}

Zhang Yanjun ^{[1
,2
]}

机构：

[1] North Univ China, Sch Instrument & Elect, Taiyuan 030051, Shanxi, Peoples R China

[2] North Univ China, Minist Educ, Key Lab Instrumentat Sci & Dynam Measurement, Taiyuan 030051, Shanxi, Peoples R China

来源：

LASER & OPTOELECTRONICS PROGRESS | 2019年 / 56卷 / 12期

关键词：

atomic and molecular physics; atomic clock; atomic vapor cell; frequency stability; temperature shift;

D O I：

10.3788/LOP56.120201

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Frequency stability is an important indicator to evaluate the performance of a coherent population trapping (CPT) atomic clock, and the type and pressure ratios of the buffer gas compositions inside an atomic vapor cell arc main factors influencing frequency stability. In this study, the temperature frequency shift caused by buffer gas compositions, i. e. , Ar and N-2, was simulated and analyzed theoretically, and the temperature shifts caused by different pressure ratios of buffer gas compositions were tested experimentally. The optimal ratio of buffer gas compositions in the atomic vapor cell was determined based on the theoretical and experimental results, and the corresponding operation point for the minimum temperature frequency shift was found. The research results provide a valuable reference for selecting the pressure ratio of buffer gas compositions and the operation temperature of the atomic vapor cell for a CPT atomic clock.

引用

页数：6

共 15 条

[1] First-order cancellation of the Cs clock frequency temperature-dependence in Ne-Ar buffer gas mixture [J].