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<p>A nonlinear selective reflection from the boundary between a transparent dielectric and dense Rb vapor has been investigated, where the dipole broadening of the 5<i>S</i><sub>1/2</sub>–5<i>P</i><sub>3/2</sub> working transition is significantly larger than the contribution of the Doppler width. A tunable probe laser and a pump laser with a fixed frequency have been used in the experiment. At a high intensity of pump radiation, a dip has appeared in the reflection spectrum, which splits the spectrum into two symmetric resonances. The splitting value is twice the Rabi frequency. The observation of a narrow structure corresponding to the dressed atomic states opens up additional possibilities for the study of many-particle interactions.</p>

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Splitting of the Selective Reflection Spectrum Due to the Resonance Optical Saturation of a Dipole-Broadened Atomic Transition

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月1日

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  • V. A. Sautenkov,
  • S. A. Saakyan,
  • A. A. Bobrov,
  • B. B. Zelener

摘要

A nonlinear selective reflection from the boundary between a transparent dielectric and dense Rb vapor has been investigated, where the dipole broadening of the 5S1/2–5P3/2 working transition is significantly larger than the contribution of the Doppler width. A tunable probe laser and a pump laser with a fixed frequency have been used in the experiment. At a high intensity of pump radiation, a dip has appeared in the reflection spectrum, which splits the spectrum into two symmetric resonances. The splitting value is twice the Rabi frequency. The observation of a narrow structure corresponding to the dressed atomic states opens up additional possibilities for the study of many-particle interactions.