Advertisement

Optics and Spectroscopy

, Volume 115, Issue 1, pp 60–67 | Cite as

Change in the states of optically excited Rb atoms near sapphire surface

  • T. A. Vartanyan
  • A. E. Logunov
  • A. S. Pazgalev
  • S. G. Przhibel’skii
  • D. Sarkisyan
  • V. V. Khromov
Condensed-Matter Spectroscopy
  • 67 Downloads

Abstract

The changes in the states of excited Rb atoms approaching a single-crystal sapphire surface have been investigated by methods of laser-excitation spectroscopy and luminescence of Rb vapor in a cell with sapphire windows, the gap between which was varied from 250 to 500 nm. Upon resonant excitation of Rb atoms by two semiconductor lasers with powers of 20 and 40 mW, luminescence from optically excited 5D 3/2 and 5D 5/2 states and optically unexcited 6P 1/2 and 6P 3/2 states is observed. It is established that the luminescence intensity from unexcited states is only a few times lower than that from excited states, with allowance for the fact that excited atoms are rapidly and almost completely quenched on the sapphire surface. The found anomalously strong luminescence from optically unexcited 6P J states is explained by their nonradiative occupation near the sapphire surface from optically excited 5P J states, in which atoms fail to reach the sapphire surface because of the repulsion from it. This repulsion is due to the polarization interaction between sapphire and the atoms in the 5P J states near the surface. Nonradiative transition from the 5P J state to the 6P J −1 state is accompanied by excitation of two optical phonons in sapphire.

Keywords

Excited State Luminescence Intensity Optical Phonon Luminescence Line Blue Luminescence 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    O. V. Krylov and B. R. Shub, Nonequilibrium Processes in Catalysis (Khimiya, Moscow, 1990) [in Russian].Google Scholar
  2. 2.
    S. G. Przhibel’skii and V. V. Khromov, Opt. Spectrosc. 88(1), 17 (2000).ADSCrossRefGoogle Scholar
  3. 3.
    A. M. Bonch-Bruevich, T. A. Vartanyan, S. G. Przhibel’skii, V. N. Smirnov, and V. V. Khromov, JETP 100(5), 998 (2005).ADSCrossRefGoogle Scholar
  4. 4.
    B. M. Smirnov, Excited Atoms (Energoizdat. Moscow, 1982) [in Russian].Google Scholar
  5. 5.
    A. M. Bonch-Bruevich, T. A. Vartanyan, S. G. Przhibel’skii, V. N. Smirnov, and V. V. Khromov, Opt. Spectrosc. 89(4), 487 (2000).ADSCrossRefGoogle Scholar
  6. 6.
    T. A. Vartanyan, Opt. Spectrosc. 88(4), 564 (2000).MathSciNetADSCrossRefGoogle Scholar
  7. 7.
    S. G. Przhibel’skii, Opt. Spectrosc. 112(5), 649 (2012).ADSCrossRefGoogle Scholar
  8. 8.
    L. Barbier and M. Cheret, J. Phys. B 16, 3213 (1983).ADSCrossRefGoogle Scholar
  9. 9.
    B. C. Duncan, V. Sanchez-Villicana, P. L. Gould, and H. R. Sadeghpour, Phys. Rev A 63, 043411 (2001).ADSCrossRefGoogle Scholar
  10. 10.
    S. Wane, J. Phys. B 18, 3881 (1985).ADSCrossRefGoogle Scholar
  11. 11.
    T. V. Perevalov and V. A. Gritsenko, Usp. Fiz. Nauk 180, 587 (2010).CrossRefGoogle Scholar
  12. 12.
    M. Fichet, F. Schuller, D. Bloch, and M. Ducloy, Phys. Rev. A 51(2), 1553 (1995).ADSCrossRefGoogle Scholar
  13. 13.
    Yu. S. Barash, Van der Waals Forces (Nauka, Moscow, 1988) [in Russian].Google Scholar
  14. 14.
    M. S. Safronova, C. J. Williams, and C. W. Clark, Phys. Rev. A 69, 022509 (2004).ADSCrossRefGoogle Scholar
  15. 15.
    M. Schubert, T. E. Tiwald, and C. M. Herzinger, Phys. Rev. B 61(12), 8187 (2000).ADSCrossRefGoogle Scholar
  16. 16.
    H. Failache, S. Saltiel, A. Fischer, D. Bloch, and M. Ducloy, Phys. Rev. Lett. 88(24), 243603-1 (2002).ADSCrossRefGoogle Scholar
  17. 17.
    M. A. El’yashevich, Atomic and Molecular Spectroscopy (GIFML, Moscow, 1962) [in Russian].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • T. A. Vartanyan
    • 1
  • A. E. Logunov
    • 1
  • A. S. Pazgalev
    • 2
  • S. G. Przhibel’skii
    • 1
  • D. Sarkisyan
    • 3
  • V. V. Khromov
    • 1
  1. 1.National Research University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia
  2. 2.Ioffe Physical Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  3. 3.Institute for Physical ResearchNational Academy of Sciences of ArmeniaAshtarak-2Armenia

Personalised recommendations