The Local-Field Effect on the Optical Transition: an Experimental Probe Using Eu3+ Diluted in Glass Systems
2014
In order to discriminate between the two macroscopic models for the dependence of the spontaneous emission rates of emitters on the refractive indices of the surrounding optical dielectric media, i.e., the local-field effect, Eu3+ activated glass samples with a range of different refractive indices were prepared for the measurements of photoluminescence emission spectrum, luminescent decay rate and refractive index. Detail analyses indicate that the local-field effect on the spontaneous emission rates follows the virtual-cavity model derived by assuming the doped luminescent ions do not disturb the optical dielectric media.
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