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      https://www.ias.ac.in/article/fulltext/pram/083/02/0189-0219

    • Keywords

       

      Doppler-free two-photon spectroscopy; cw laser; isotope shift; hyperfine structure; interferometer; absolute frequency; alkali elements.

    • Abstract

       

      In this paper, we have briefly reviewed the work on two-photon spectroscopy of alkali elements and its applications. The technique of Doppler-free two-photon spectroscopy is briefly summarized. A review of various techniques adopted for measuring absolute frequencies of the atomic transitions and precision measurements of isotope shifts and hyperfine structures (HFS) is presented. Some of the recent works on precision measurements of HFS constants of 6𝑠 ${}^2S_{1/2}$ level of ${}^{39}$K and ${}^{41}$K, 9𝑠 ${}^2S_{1/2}$ level and 7𝑑 ${}^2D_{3/2}$ level of 133Cs are also discussed.

    • Author Affiliations

       

      P V Kiran Kumar1 M V Suryanarayana1

      1. National Centre for Compositional Characterisation of Materials, Bhabha Atomic Research Centre, Hyderabad 500 062, India
    • Dates

       
  • Pramana – Journal of Physics | News

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