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Luminescence of the Cr 3+ R-lines in pure and MgO co-doped near stoichiometric LiNbO 3 :Cr crystals

  • T. P.J. Han*
  • , F. Jaque
  • , V. Bermúdez
  • , E. Diéguez
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The photoluminescence property of pure and MgO co-doped near stoichiometric LiNbO 3 :Cr crystals has been investigated. It has been found that the presence of low Mg ion content in the crystals induces the coexistence of two types of Cr 3+ sites; Cr 3+ ion substituting Li + and Nb 5+ sites. In MgO co-doped samples, four narrow emission bands have been found and three of them are correlated with the broad absorption bands associated to the Cr 3 + ions located in Nb 5+ site ([Cr] Nb centres). The observation of the zero-phonon line at 13 540 cm -1 only in pure LiNbO 3 :Cr crystals of near stoichiometric composition suggests it could be used as a probe to monitor the composition of LiNbO 3 crystals.

Original languageEnglish
Pages (from-to)519-524
Number of pages6
JournalChemical Physics Letters
Volume369
Issue number5-6
DOIs
Publication statusPublished - 28 Feb 2003
Externally publishedYes

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