Abstract
The lifetimes of the R-lines from the 2 E level and the broad bands from the 4 T 2 level of Cr3+ ions in various garnet crystals vary with the energy separation between the 2 E and 4 T 2 levels, which change systematically with the composition of host crystal. The trend of the Cr3+ lifetimes, as well as their temperature dependences in garnet crystals, is explained by zero-point vibration and phonon-assisted tunnelling between the 2 E and 4 T 2 states of Cr3+ ion.
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Yamaga, M., Henderson, B., O'Donnell, K.P. et al. Temperature dependence of the lifetime of Cr3+ luminescence in garnet crystals I. Appl. Phys. B 50, 425–431 (1990). https://doi.org/10.1007/BF00325096
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DOI: https://doi.org/10.1007/BF00325096