High-contrast atomic dark resonances formed in a ladder system of rubidium atoms in submicron structures

  • D. Sarkisyan
  • A. Sargsyan
  • J. Keaveney
  • C. S. Adams
Atoms, Molecules, Optics

Abstract

It is shown that high-contrast resonance of electromagnetically induced transparency (EIT) in a ladder Ξ-system of 5S1/2-5P3/2-5D5/2 levels can be formed in optical cells containing a column of rubidium vapor with thickness L in an interval of 100 nm ≤ L ≤ 780 nm. Using bichromatic laser radiation with certain parameters, an 83% contrast of the EIT resonance (or dark resonance, DR) has been achieved for a vapor column thickness of L = 780 nm. An important condition for the formation of high-contrast DR is that the frequency of the coupling laser radiation must be resonant with the frequency of the corresponding 5P3/2-5D5/2 transition (for the probe radiation frequency scanned over the 5S1/2-5P3/2 transition). It is also shown that a DR can be formed at a record small vapor column thickness of L ≈ 100 nm. Expressions that can be used to estimate the expected DR width at small L values are presented.

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Copyright information

© Pleiades Publishing, Inc. 2014

Authors and Affiliations

  • D. Sarkisyan
    • 1
  • A. Sargsyan
    • 1
  • J. Keaveney
    • 2
  • C. S. Adams
    • 2
  1. 1.Institute for Physical ResearchNational Academy of Sciences of ArmeniaAshtarakArmenia
  2. 2.Joint Quantum Centre (JQC) Durham-Newcastle, Department of PhysicsDurham UniversityDurhamUK

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