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TitleUltraviolet induced absorption and Bragg grating inscription in RbCdF3: Mn2+
Publication TypeJournal Article
Year of Publication2007
AuthorsWilliams, G.V.M., Dotzler C., Edgar A., and Raymond S.G.
JournalJournal of Applied Physics
Date Published2007
ISSN00218979 (ISSN)
KeywordsBragg gratings, Carrier traps, Holographic gratings, Light absorption, Optically stimulated luminescence (OSL), Rubidium compounds, Single crystals, Thermoluminescence, Ultraviolet induced absorption, Ultraviolet radiation
AbstractThe effects of ultraviolet (UV) irradiation on the optical absorption, optically stimulated luminescence (OSL), and thermoluminescence (TL) properties of RbCdF3: Mn2+ are reported. There is a UV induced optical absorption at ∼4 eV, together with OSL and TL that are attributed to a distribution of carrier traps, as well as isolated or disconnected traps. We show that the time-integrated OSL for samples with different Mn2+ concentrations is correlated with the UV-induced change in the absorption coefficient, which we attribute to a higher trap concentration in samples with high Mn2+ concentrations. The UV-induced changes in the optical properties can be completely bleached, which leads to the possibility of holographic storage. We show that stable and rewritable thick Bragg gratings can be made in RbCdF3: Mn2+ single crystals after UV irradiation at 254 nm where the gratings were made by two beam interference at 364 nm. © 2007 American Institute of Physics.

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