中国物理B ›› 2001, Vol. 10 ›› Issue (8): 716-719.doi: 10.1088/1009-1963/10/8/309

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PRECISE MEASUREMENT OF DENSITY-DEPENDENT SHIFT BY WAVELENGTH MODULATION REFLECTION SPECTROSCOPY

肖连团, 赵建明, 李昌勇, 贾锁堂, 周国生   

  1. Department of Electronics and Information Technology, Shanxi University Taiyuan 030006 and Key Laboratory of Quantum Optics, Ministry of Education, China
  • 收稿日期:2001-02-15 修回日期:2001-02-23 出版日期:2001-08-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19774039, 60078009) and the Natural Science Foundation of Shanxi Province.

PRECISE MEASUREMENT OF DENSITY-DEPENDENT SHIFT BY WAVELENGTH MODULATION REFLECTION SPECTROSCOPY

Xiao Lian-tuan (肖连团), Zhao Jian-ming (赵建明), Li Chang-yong (李昌勇), Jia Suo-tang (贾锁堂), Zhou Guo-sheng (周国生)   

  1. Department of Electronics and Information Technology, Shanxi University Taiyuan 030006 and Key Laboratory of Quantum Optics, Ministry of Education, China
  • Received:2001-02-15 Revised:2001-02-23 Online:2001-08-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19774039, 60078009) and the Natural Science Foundation of Shanxi Province.

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摘要： The density dependence of the line shift of the cesium D2 line is studied with sub-Doppler selective reflection spectroscopy. By use of wavelength modulation and sixth-harmonics detection we observed the coefficient of the pressure-induced shift of the 6S1/2(F=4)→6P3/2(F'=3) hyperfine transition of the cesium D2 line Δδ/ρ=-0.9(5)×10-8cm3. In the limit ρ=0 a frequency shift about -3MHz remains, which may be attributed to long-range atom－surface interactions. The experimental results can be used in measurements of the local field-induced frequency shift at high atomic densities with sufficient accuracy.

Abstract: The density dependence of the line shift of the cesium D2 line is studied with sub-Doppler selective reflection spectroscopy. By use of wavelength modulation and sixth-harmonics detection we observed the coefficient of the pressure-induced shift of the 6S1/2(F=4)→6P3/2(F'=3) hyperfine transition of the cesium D2 line $\Delta \delta/\rho$ = -0.9(5)×10-8cm3. In the limit $\rho=0$ a frequency shift about -3MHz remains, which may be attributed to long-range atom－surface interactions. The experimental results can be used in measurements of the local field-induced frequency shift at high atomic densities with sufficient accuracy.

Key words: selective reflection, sub-Doppler, wavelength modulation spectroscopy, harmonic detection

中图分类号:  (Line shapes, widths, and shifts)

  • 32.70.Jz
32.10.Fn (Fine and hyperfine structure)