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Acta Physica Hungarica

, Volume 70, Issue 1–2, pp 113–119 | Cite as

The influence of external electric field on f−f absorption spectrum of lithium niobate crystals doped by rare earth ions

  • A. P. Skvortsov
  • K. Polgár
Condensed Matter
  • 32 Downloads

Abstract

The influence of an external electric field on the absorption spectra of LiNbO3 crystals doped by Ho3+, Er3+, Tm3+ was studied by means of sensitive modulation technique at 77 K. The linear Stark effect has been observed in spectra of these crystals. The properties of Stark effect reveal orientation of constant dipole moments of rare earth centres along the trigonal axis of crystals, which confirms their trigonalc 3-symmetry. Moreover, the linear Stark effect connected with the removal of orbital level degeneracy has been observed in spectra of crystals with impurities Ho3+ and Tm3+ in the field ɛ⊥c 3.

Keywords

LiNbO3 External Electric Field Lithium Niobate Stark Effect Lithium Niobate Crystal 
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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Copyright information

© Akadémiai Kiadó 1991

Authors and Affiliations

  • A. P. Skvortsov
    • 1
  • K. Polgár
    • 2
  1. 1.Joffe Physico-Technical InstituteLeningradUSSR
  2. 2.Research Laboratory for Crystal Physics of the Hungarian Academy of SciencesBudapestHungary

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