Emission spectrum of Ti3+: Gd3Sc2Al3O12 garnet crystal

Y. Gao, M. Yamaga, B. Henderson, K.P. O'Donnell

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2 Citations (Scopus)

Abstract

The photoluminescence spectrum of Ti3+-doped Gd3Sc2Al3O12 observed at 77 K and below consists of a series of zero-phonon lines with vibronic structure and a broad band spanning the wavelength range 650 to 1300 nm. By using time-resolved spectroscopy this spectrum has been shown to have overlapping features due to Cr3+ ions, present as ubiquitous impurities in most garnets, and Ti3+ ions, as the dominant active species in these crystals. The Cr3+ impurities are revealed by the zero-phonon lines at 689.2-690.4 nm with attendant phonon-assisted structure. The broadband with peak at 850 nm is identified with the multiphonon sideband of the 2E→2T2 transition of Ti3+ in trigonally-distorted sites in Gd3Sc2Al3O12.

Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalChemical Physics Letters
Volume210
Issue number1-3
DOIs
Publication statusPublished - 23 Jul 1993

Keywords

  • photoluminescence
  • garnet substate
  • garnet crystals

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