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Emission and absorption cross sections of Er3+:LiNbO3 crystal: Composition effect

  • Tianjin University
  • City University of Hong Kong

Research output: Contribution to journalArticlepeer-review

Abstract

We report Er3+-doping, Mg2+-codoping and crystal composition effects on emission and absorption cross sections of Er3+-only doped and Er3+/Mg2+-codoped LiNbO3 crystals, in which Er3+ concentration ranges from 0.3 to 2.7 mol% and Mg2+ concentration from 1.2 to 7.4 mol%. The emission cross section spectra were calculated from the measured fluorescent spectra and the absorption cross section spectra were computed using the McCumber relation. The results show that increasing Er3+ concentration tends to decrease the cross section, while codoping with Mg2+ or increasing crystal composition tends to increase the cross section. As the composition is close to the stoichiometry, the cross section value tends to a constant. These effects are related to Er3+ site redistribution induced by doping or crystal composition alteration.

Original languageEnglish
Pages (from-to)1920-1926
Number of pages7
JournalOptical Materials Express
Volume5
Issue number9
DOIs
StatePublished - 2015
Externally publishedYes

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