Spectral migration of excitation energy among Nd3+ ions in fluoroarsenate glasses |
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| Institution: | 1. Dpto. Fisica Aplicada I, Escuela Superior de Ingenieros, Alda. Urquijo s/n 48013 Bilbao, Spain;2. Centro Mixto CSIC-UPV/EHU, Donostia, Spain;3. Donostia International Physics Center (DIPC), Donostia, Spain;4. Dpto. Fisica Aplicada II, Facultad de Ciencias, Universidad del País Vasco, Apartado 644, Bilbao, Spain;5. Laboratoire des verres & céramiques, université Rennes-1, UMR CNRS 6512, Campus de Beaulieu, 35042 Rennes cedex, France |
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| Abstract: | In this work, we have investigated the existence of energy transfer among Nd3+ ions in fluoroarsenate glasses of the Na4As2O7, BaF2, YF3 system with different Nd3+ concentrations (0.5, 2, 3, 4, and 5 mol%) by using time-resolved fluorescence line narrowing spectroscopy. The spectral features of the time resolved fluorescence line narrowing 4F3/2→4I9/2 emission spectra obtained under resonant excitation reveal the existence of spectral migration of excitation among the Nd3+ ions. The analysis of the time evolution of the 4F3/2→4I9/2 narrowed emission shows that the electronic mechanism responsible for the ion–ion interaction can be identified as a dipole–dipole energy transfer process. |
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