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The European Physical Journal D

, Volume 41, Issue 3, pp 447–454 | Cite as

Femtosecond laser pulse train effect on Doppler profile of cesium resonance lines

  • N. VujičićEmail author
  • S. Vdović
  • D. Aumiler
  • T. Ban
  • H. Skenderović
  • G. Pichler
Atomic Physics

Abstract.

We present direct observation of the velocity-selective optical pumping of the Cs ground state hyperfine levels induced by the femtosecond (fs) laser oscillator centered at either D2 (6 2S1/2↦6 2P3/2, 852 nm) or D1 (6 \(^{2}{\rm S}_{1/2}\to6~^{2}\)P1/2, 894 nm) cesium line. We utilized previously developed modified direct frequency comb spectroscopy (DFCS) which uses a fixed frequency comb for the excitation and a weak cw scanning probe laser centered at the 133Cs 6 2S1/2↦6 2P3/2 transition (D2 line) for ground levels population monitoring. The frequency comb excitation changes the usual Doppler absorption profile into a specific periodic, comblike structure. The mechanism of the velocity selective population transfer between the Cs ground state hyperfine levels induced by fs pulse train excitation is verified in a theoretical treatment of the multilevel atomic system subjected to a pulse train resonant field interaction.

PACS.

32.80.Qk Coherent control of atomic interactions with photons 42.50.Gy Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  • N. Vujičić
    • 1
    Email author
  • S. Vdović
    • 1
  • D. Aumiler
    • 1
  • T. Ban
    • 1
  • H. Skenderović
    • 1
  • G. Pichler
    • 1
  1. 1.Institute of PhysicsZagrebCroatia

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