Timehyphen;resolved spectroscopy measurements were made on LiNbO3and LiNbO3:Eu3+, Cr3+crystals after pulsed nitrogen laser excitation. The results are found to be consistent with a model of host exciton migration and trapping at activator ion sites with efficient Eu3+ndash;Cr3+transfer also occurring. The properties of this hosthyphen;sensitized energy transfer are characterized in a diffusion model and the results are discussed in terms of their possible implications on the use of this material in laser host and holographic storage applications.
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