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Journal of Optical Technology

Journal of Optical Technology


  • Vol. 78, Iss. 5 — May. 1, 2011
  • pp: 346–348

Resonance laser spectroscopy of ion pairs in a Nd3+: LaF3 crystal

R. A. Akhmedzhanov, A. A. Bondartsev, L. A. Gushchin, and V. V. Chernov  »View Author Affiliations

Journal of Optical Technology, Vol. 78, Issue 5, pp. 346-348 (2011)

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This paper shows that the satellite lines that appear in the absorption and fluorescence spectra of neodymium ions in a LaF3 crystal at concentrations of about 0.5 at.% and the accompanying lines of the isolated ion are caused by pairwise interaction of the Nd3+ ions. Double optical resonance is used to study the structure of the satellite lines in the neighborhood of the 4I9/24G5/2 transition of the isolated ion (wavelength 5777.1 Å), hidden by inhomogeneous broadening. When neodymium ion pairs are excited by resonance laser radiation, the presence of anti-Stokes components is recorded in the fluorescence spectrum (up-conversion). It is shown that the main up-conversion mechanism is cumulative pair excitation. These results are convincing evidence that the suppression of absorption from excited levels can be experimentally observed in condensed media.

© 2011 OSA

Original Manuscript: September 1, 2010
Published: June 20, 2011

R. A. Akhmedzhanov, A. A. Bondartsev, L. A. Gushchin, and V. V. Chernov, "Resonance laser spectroscopy of ion pairs in a Nd3+: LaF3 crystal," J. Opt. Technol. 78, 346-348 (2011)

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