Time-resolved fluorescence line-narrowing and lifetime studies of gel-derived Eu2O3-Al2O3-SiO2 systems

Michael J. Lochhead; Kevin L. Bray

doi:10.1117/12.189005

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13 October 1994 Time-resolved fluorescence line-narrowing and lifetime studies of gel-derived Eu₂O₃-Al₂O₃-SiO₂ systems

Michael J. Lochhead; Kevin L. Bray

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Proceedings Volume 2288, Sol-Gel Optics III; (1994) https://doi.org/10.1117/12.189005
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Time-resolved, fluorescence line narrowing (FLN) spectra and fluorescence lifetimes are used to characterize local structure in Eu³⁺-doped silica gels. Co-doping with Al³⁺ is shown to have a significant effect on the local structure of the Eu³⁺ ion in the silica matrix. A pulsed dye laser was used to selectively excite subsets of ions contributing to the inhomogeneously broadened ⁷F_O$ARLR⁵D_O transition. Resultant line-narrowed fluorescence spectra and lifetimes are interpreted in terms of site symmetry, energy transfer, Eu³⁺ ion clustering, and residual hydroxyl groups.

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Michael J. Lochhead and Kevin L. Bray "Time-resolved fluorescence line-narrowing and lifetime studies of gel-derived Eu₂O₃-Al₂O₃-SiO₂ systems", Proc. SPIE 2288, Sol-Gel Optics III, (13 October 1994); https://doi.org/10.1117/12.189005

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