Vibronic structure in the photoluminescence spectrum of Cr3+ ions in garnets

K. P. O'Donnell, A. Marshall, M. Yamaga, B. Henderson, B. Cockayne

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The low temperature photoluminescence from Cr3+ ions in Y3Al5O12 (YAG), Y3Ga5O12 (YGG), Gd3Sc2Ga3O12 (GSGG ) and Gd3Sc2Al3O12 (GSAG) have different characteristic lineshapes. YAG and YGG emit entirely in the R-lines with associated sidebands, whereas for GSGG and GSAG the emission is a mélange of R-line processes and broad 4T*2g4A2g bands. This paper compares the experimental spectra of Cr3+ ions in these garnets in terms of the symmetry and energies of the vibrational models coupled to the electronic states. In GSGG, we have used fluorescence line narrowing (FLN) to probe the broadening of the vibronic structure introduced by compositional disorder.

LanguageEnglish
Pages365-373
Number of pages9
JournalJournal of Luminescence
Volume42
Issue number6
DOIs
Publication statusPublished - 1 Jan 1989

Fingerprint

Garnets
yttrium-aluminum garnet
garnets
Photoluminescence
Ions
photoluminescence
Electronic states
ions
Fluorescence
sidebands
Temperature
disorders
fluorescence
probes
symmetry
electronics
energy
yttrium-aluminum-garnet

Keywords

  • photoluminescence
  • garnet crystals
  • low temperature photoluminescence

Cite this

O'Donnell, K. P. ; Marshall, A. ; Yamaga, M. ; Henderson, B. ; Cockayne, B. / Vibronic structure in the photoluminescence spectrum of Cr3+ ions in garnets. In: Journal of Luminescence. 1989 ; Vol. 42, No. 6. pp. 365-373.
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Vibronic structure in the photoluminescence spectrum of Cr3+ ions in garnets. / O'Donnell, K. P.; Marshall, A.; Yamaga, M.; Henderson, B.; Cockayne, B.

In: Journal of Luminescence, Vol. 42, No. 6, 01.01.1989, p. 365-373.

Research output: Contribution to journalArticle

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AU - O'Donnell, K. P.

AU - Marshall, A.

AU - Yamaga, M.

AU - Henderson, B.

AU - Cockayne, B.

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AB - The low temperature photoluminescence from Cr3+ ions in Y3Al5O12 (YAG), Y3Ga5O12 (YGG), Gd3Sc2Ga3O12 (GSGG ) and Gd3Sc2Al3O12 (GSAG) have different characteristic lineshapes. YAG and YGG emit entirely in the R-lines with associated sidebands, whereas for GSGG and GSAG the emission is a mélange of R-line processes and broad 4T*2g→4A2g bands. This paper compares the experimental spectra of Cr3+ ions in these garnets in terms of the symmetry and energies of the vibrational models coupled to the electronic states. In GSGG, we have used fluorescence line narrowing (FLN) to probe the broadening of the vibronic structure introduced by compositional disorder.

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