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Improvement of spectral resolution by using the excitation dependence of dipole–dipole interaction in a dense atomic gas

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Abstract

We have studied the selective reflection from the interface between a dense rubidium (Rb) atomic vapor and a transparent dielectric. A remarkable narrowing of the spectrum, which can be used to improve the resolution of spectroscopy of dense media, has been demonstrated. This narrowing results from the reduction of the dipole–dipole interaction between atoms when the Rb vapor is excited by a strong pump laser. By using this technique, we have resolved the hyperfine structure of the Rb D2 line, which is hidden by collisional broadening.

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Authors and Affiliations

  1. Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, TX, 77843, USA

    H. Li, V.A. Sautenkov, Y.V. Rostovtsev, H. Chen & M.O. Scully

  2. Institute for Physical Research of NAS of Armenia, 378410, Ashtarak-2, Armenia

    T.S. Varzhapetyan & D. Sarkisyan

  3. P.N. Lebedev Physical Institute of RAS, 53 Leninsky Prospect, Moscow, 119991, Russia

    V.A. Sautenkov

  4. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, 08544, USA

    M.O. Scully

Authors
  1. H. Li
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  2. T.S. Varzhapetyan
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  3. V.A. Sautenkov
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  4. Y.V. Rostovtsev
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  5. H. Chen
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  6. D. Sarkisyan
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  7. M.O. Scully
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Corresponding author

Correspondence to H. Li.

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PACS

32.70.Jz; 42.50.Ct; 34.80.Dp

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Li, H., Varzhapetyan, T., Sautenkov, V. et al. Improvement of spectral resolution by using the excitation dependence of dipole–dipole interaction in a dense atomic gas. Appl. Phys. B 91, 229–231 (2008). https://doi.org/10.1007/s00340-008-3006-6

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  • DOI: https://doi.org/10.1007/s00340-008-3006-6

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