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

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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.

LanguageEnglish
Pages132-136
Number of pages5
JournalApplied Physics B Photophysics and Laser Chemistry
Volume51
Issue number2
DOIs
Publication statusPublished - 1 Aug 1990

Fingerprint

Garnets
Wave functions
Excited states
garnets
Luminescence
Photoluminescence
luminescence
broadband
photoluminescence
life (durability)
temperature dependence
Crystals
decay
excitation
crystals
Temperature

Keywords

  • garnet crystals
  • photoluminescence spectra
  • luminescence decay

Cite this

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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.",
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Temperature dependence of the lifetime of Cr3+ luminescence in garnet crystals : II. The case of YGG. / Yamaga, M.; Henderson, B.; O'Donnell, K. P.; Yue, G.

In: Applied Physics B Photophysics and Laser Chemistry, Vol. 51, No. 2, 01.08.1990, p. 132-136.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Temperature dependence of the lifetime of Cr3+ luminescence in garnet crystals

T2 - Applied Physics B - Photophysics and Laser Chemistry

AU - Yamaga, M.

AU - Henderson, B.

AU - O'Donnell, K. P.

AU - Yue, G.

PY - 1990/8/1

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AB - 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.

KW - garnet crystals

KW - photoluminescence spectra

KW - luminescence decay

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