铷光谱灯光谱自吸收现象研究

郝强; 许风; 王芳; 赵峰; 钟达; 梅刚华; 何胜国

doi:10.11938/cjmr20160211

波谱学杂志 >

2016 , Vol. 33 >Issue 2: 288 - 294

DOI: https://doi.org/10.11938/cjmr20160211

研究论文

铷光谱灯光谱自吸收现象研究

郝强 ,
许风 ,
王芳 ,
赵峰 ,
钟达 ,
梅刚华 ,
何胜国

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1. 中国科学院原子频标重点实验室(中国科学院武汉物理与数学研究所), 湖北武汉 430071;
2. 中国科学院大学, 北京 100049

何胜国(1986-),男,湖北随州人,博士研究生,原子分子物理专业.

收稿日期: 2015-04-27

修回日期: 2016-04-16

网络出版日期: 2016-06-05

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A Study on Self-Absorption of Spectral Lines of Rubidium Spectral Lamp

HAO Qiang ,
XU Feng ,
WANG Fang ,
ZHAO Feng ,
ZHONG Da ,
MEI Gang-hua ,
HE Sheng-guo

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1. Key Laboratory of Atom Frequency Standard of the Chinese Academy of Sciences, (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2015-04-27

Revised date: 2016-04-16

Online published: 2016-06-05

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摘要

由自吸收导致的铷光谱灯超精细光谱轮廓变形,对铷原子频标的频率稳定度有不利影响.用F-P干涉仪测量了三种常用铷光谱灯的超精细光谱轮廓,研究了启辉气体种类、压力、谱灯工作温度和激励功率对自吸收的影响.结果表明,充Ar和充Kr谱灯自吸收效应比较显著,充Xe谱灯自吸收不明显;适当增大气体压力、降低灯泡工作温度、增大射频激励功率,可以减小光谱灯的自吸收效应.

关键词： 铷原子频标; 铷光谱灯; 自吸收; 超精细光谱轮廓

本文引用格式

郝强 , 许风 , 王芳 , 赵峰 , 钟达 , 梅刚华 , 何胜国 . 铷光谱灯光谱自吸收现象研究[J]. 波谱学杂志, 2016 , 33(2) : 288 -294 . DOI: 10.11938/cjmr20160211

Abstract

Spectral line profile distortion, resulted from self-absorption of rubidium atoms in the rubidium spectral lamp bulb, is detrimental to the frequency stability of rubidium frequency standard. In this study, the hyperfine spectral profiles of rubidium lamps were studied with an F-P interferometer, and the influence of the type and pressure of buffer gas, lamp operating temperature and radio frequency-excitation power on self-absorption was examined. The results showed that the lamps filled with Ar gas or Kr gas showed serious self-absorption, while Xe-filled lamps had less self-absorption. Self-absorption could also be reduced by either sufficiently decreasing the operating temperature or increasing the pressure of buffer gas and rf-excitation power of the lamp.

Key words： rubidium atomic frequency standard; rubidium spectral lamp; self-absorption; hyperfine spectral profile

参考文献

[1] Wang Yi-qiu(王义遒), Wang Qing-ji(王庆吉), Fu Ji-shi(傅济时), et al. Quantum Frequency Standard Theory(量子频标原理)[M]. Beijing(北京):Science Press(科学出版社), 1986.

[2] Gibbs H M, Hull P J. Spin-exchange cross sections for Rb87-Rb-87 and Rb87-Cs133 collisions[J]. Phys Rev, 1967, 153(1):132-154.

[3] Cowan R D, Dieke G H. Self-absorption of spectral lines[J]. Rev Mod Phys, 1948, 20(2):418-455.

[4] Hao Q, He S G, Xu F, et al. China Satellite Navigation Conference (CSNC) 2015 Proceedings[C]. Xi'an:Springer-verlag, Berlin, Heidelberg, 2015.

[5] Zhao Feng(赵峰), Zeng Yuan(曾媛), Wu Han-hua(吴汉华), et al. A Rubidium Discharge Lamp Used in Rubidium Frequency Standard(星载铷原子频标光谱灯研制)[C]. 贵阳:2003年全国时间频率学术会议, 2003.

[6] Dass T, Freed G, Petzinger J, et al. Proceedings of the 34th Annual Precise Time and Time Interval (PTTI) Systems and Applications Meeting[C]. Reston U S A:US Naval Observatory, 2002.

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