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Optics and Spectroscopy

, Volume 119, Issue 6, pp 1038–1048 | Cite as

Particularities of optical pumping effects in cold and ultra-slow beams of Na and Cs in the case of cyclic transitions

  • M. Bruvelis
  • A. Cinins
  • A. Leitis
  • D. K. Efimov
  • N. N. Bezuglov
  • A. S. Chirtsov
  • F. Fuso
  • A. Ekers
Lasers and Their Application

Abstract

The time-dependent population dynamics of hyperfine (HF) levels of n 2 p 3/2 states is examined for cyclic transitions in alkali atoms. We study a slow and cold atomic beam of Na (n = 3) and Cs (n = 6), taking into account the long interaction time of light with atoms (~200 μs) inside the resonant laser beam. Simple analytical expressions for the populations of the excited states and for the intensities of the absorption lines are derived for a three-level system model. We show that at moderate pump laser power the mixing of HF levels is sufficient to form a flow of population from a cyclic transition to partially open transitions. We discuss various phenomena associated with the evolution of optical pumping that cannot be explained by general analysis of two-level system model.

Keywords

Pump Laser Rabi Frequency Cyclic Transition Alkali Atom Adiabatic Elimination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    W. Happer, Rev. Mod. Phys. 44, 169 (1972).CrossRefADSGoogle Scholar
  2. 2.
    C. Cohen-Tannoudji and A. Kastler, Optical Pumping (North-Holland, Amsterdam, 1966).CrossRefGoogle Scholar
  3. 3.
    C. Cohen-Tannoudji, Rev. Mod. Phys. 70, 707 (1998).CrossRefADSGoogle Scholar
  4. 4.
    B. W. Shore, The Theory of Coherent Atomic Excitation (Wiley, New York, 1990).Google Scholar
  5. 5.
    I. Sydoryk, N. N. Bezuglov, I. I. Beterov, et al., Phys. Rev. A 77, 04251 (2008).CrossRefGoogle Scholar
  6. 6.
    H. J. Metcalf and P. van der Straten, Laser Cooling and Trapping (Springer, New York, 1999).CrossRefGoogle Scholar
  7. 7.
    J. Alnis and M. Auzinsh, J. Phys. B 34, 3889 (2001).CrossRefADSGoogle Scholar
  8. 8.
    E. B. Aleksandrov and V. S. Zapasskii, Laser Magnetic Spectroscopy (Nauka, Moscow, 1986) [in Russian].Google Scholar
  9. 9.
    J. Ulmanis, J. Deiglmayr, M. Repp, R. Wester, and M. Weidemuller, Hem. Rev. 112, 4890 (2012).Google Scholar
  10. 10.
    A. Camposeo et al., Opt. Commun. 200, 231 (2001).CrossRefADSGoogle Scholar
  11. 11.
    C. O’Dwyer, G. Gay, B. Viaris de Lesegno, et al., Nanotecnology 16, 1536 (2005).CrossRefGoogle Scholar
  12. 12.
    N. F. Ramsey, Molecular Beams (Clarendon, Oxford, 1989).Google Scholar
  13. 13.
    Atomic and Molecular Beam Techniques, Ed. by G. Scoles (Oxford Univ. Press, Oxford, 1988).Google Scholar
  14. 14.
    N. Porfido, F. Fuso, N. N. Bezuglov, A. Ekers, et al., Phys. Rev. A (2015, in press).Google Scholar
  15. 15.
    R. Garcia-Fernandez, A. Ekers, J. Klavins, L. P. Yatsenko, N. N. Bezuglov, B. W. Shore, and K. Bergmann, Phys. Rev. A 71, 023401 (2005).CrossRefADSGoogle Scholar
  16. 16.
    L. Allen and J. Eberly, Optical Resonance and Two-Level Atoms (Wiley, New York, 1975).Google Scholar
  17. 17.
    I. Sobelman, Atomic Spectra and Radiative Transitions (Nauka, Moscow, 1977; Springer, Berlin, 1978).Google Scholar
  18. 18.
    A. B. Migdal and V. P. Krainov, Approximation Methods in Quantum Mechanics (Nauka, Moscow, 1978; Benjamin, New York, 1969).Google Scholar
  19. 19.
    M. Bruvelis, J. Ulmanis, N. N. Bezuglov, et al., Phys. Rev. A 86, 012501 (2012).CrossRefADSGoogle Scholar
  20. 20.
    M. V. Fedoryuk, Method of Saddle Points (Nauka, Moscow, 1963) [in Russian].Google Scholar
  21. 21.
    S. Stenholm, Foundations of Laser Spectroscopy (Courier Dover, New York, 2005).Google Scholar
  22. 22.
    L. D. Landau and E. M. Lifshits, Course of Theoretical Physics, Vol. 3: Quantum Mechanics: Nonrelativistic Theory (Nauka, Moscow, 1989; Pergamon, New York, 1977).Google Scholar
  23. 23.
    I. S. Gradshtein and I. M. Ryzhik, Tables of Integrals, Sums, Series, and Products (Fizmatgiz, Moscow, 1971; Academic, New York, 2000).Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • M. Bruvelis
    • 1
  • A. Cinins
    • 1
    • 2
  • A. Leitis
    • 1
  • D. K. Efimov
    • 1
    • 3
  • N. N. Bezuglov
    • 3
    • 4
  • A. S. Chirtsov
    • 3
    • 4
  • F. Fuso
    • 5
  • A. Ekers
    • 6
  1. 1.Laser CentreUniversity of LatviaRigaLatvia
  2. 2.University of LatviaInstitute of Atomic Physics and SpectroscopyRigaLatvia
  3. 3.St. Petersburg State UniversitySt. PetersburgRussia
  4. 4.ITMO UniversitySt. PetersburgRussia
  5. 5.Dipartimento di Fisica Enrico Fermi and CNISMUniversità di PisaPisaItaly
  6. 6.King Abdullah University of Science and TechnologyThuwalSaudi Arabia

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