Abstract
Spectral hole-burning has been carried out for glasses with compositions of Eu 2O 3-doped xAl 2O 3–(100 − x)SiO 2 ( x = 10, 20, 30, 40) glasses prepared by melt-quenching. We investigated the effect of Al 2O 3 and Eu 3+ ions on persistent spectral hole burning (PSHB). The spectral holes were burned on the excitation spectra of the 7F 0 → 5D 0 transition of the Eu 3+ ions. Hole-depth increases with the content of Eu 2O 3. The content of Al 2O 3 influenced the hole-width rather than hole-depth. The hole-burning was presumably related to the electron transfer between the Eu 3+ and the defect.
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