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

Yunchao Li; Xuwen Hu; Lu Zhang; Zhaojun Liu; Kaifang Zhang; Shihao Mou; Shubin Yan; Yanjun Zhang

doi:10.3788/LOP56.120201

Laser & Optoelectronics Progress, Volume. 56, Issue 12, 120201(2019)

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

Yunchao Li^1,2, Xuwen Hu^1,2, Lu Zhang^1,2, Zhaojun Liu^1,2, Kaifang Zhang^1,2, Shihao Mou^1,2, Shubin Yan^1,2, and Yanjun Zhang^1,2、*

Author Affiliations

¹ School of Instrument and Electronics, North University of China, Taiyuan, Shanxi 0 30051, China

² Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, North University of China, Taiyuan, Shanxi 0 30051, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(5)

Fig. 1. r versus temperature

Download full size

Fig. 2. Simulation results of temperature frequency shift for buffer gas. (a) Frequency shift of buffer gas mixture versus cell temperature; (b) temperature coefficient versus pressure ratio r of Ar-N2

Download full size

Fig. 3. Principle diagram of frequency shift measurement in atomic vapor cell

Download full size

Fig. 4. Frequency shift versus cell temperature under different r. (a) Cell 1, r= 0.5∶1; (b) Cell 2, r= 1∶1; (c) Cell 3, r=1.6∶1

Download full size

Table 1. Linear frequency shift coefficients and temperature coefficients for Rb atoms with different buffer gas compositions when T0=60 ℃
View table
Table 1. Linear frequency shift coefficients and temperature coefficients for Rb atoms with different buffer gas compositions when T0=60 ℃
Buffer gas β /(Hz·Pa^-1) δ /(Hz·℃^-1·Pa^-1) γ /(Hz·℃^-2·Pa^-1)
Ar -0.434 -2.4×10^-3 -2.625×10^-6
N₂ 4.102 3.9×10^-3 -1.125×10^-5
CH₄ 3.816 4.425×10^-3 -4.5×10^-7
Kr -4.452 -4.275×10^-3 0

Tools

Get Citation

Copy Citation Text

Yunchao Li, Xuwen Hu, Lu Zhang, Zhaojun Liu, Kaifang Zhang, Shihao Mou, Shubin Yan, Yanjun Zhang. Optimization of Buffer Gas Compositions in Atomic Vapor Cell for Coherent Population Trapping Atomic Clock[J]. Laser & Optoelectronics Progress, 2019, 56(12): 120201

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites