Temperature dependence of the lifetime of Cr3+ luminescence in garnet crystals: II. The case of YGG

M. Yamaga, B. Henderson, K. P. O'Donnell, G. Yue

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The coexistence of sharp R-lines from the 2E state and the broad band from the 4T2 state in the photoluminescence spectra of Cr3+:Gd3Sc2Ga3O12 (GSGG) and Cr3+:Y3Ga5O12 (YGG) is observed at low temperature (10K). The decay lifetimes of the broad emission bands of Cr3+ in GSGG and YGG are very close to those of the R-lines being, respectively, 0.23 ms and 2.5 ms. These results are explained in terms of the extent of the mixing of the 4T2 vibronic wavefunction with that of the 2E lowest excited state by tunnelling.

Original languageEnglish
Pages (from-to)132-136
Number of pages5
JournalApplied Physics B Photophysics and Laser Chemistry
Volume51
Issue number2
DOIs
Publication statusPublished - 1 Aug 1990

Keywords

  • garnet crystals
  • photoluminescence spectra
  • luminescence decay

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