Quantification of the resonant energy transfer processes in Er3+/Yb3+ co-doped Ca3Al2Si3O12 glasses
| Autor: | Cantelar Alcaide, Eugenio Francisco, Lifante Pedrola, Ginés, Grima, Lorena, Peña, José Ignacio, Sola, Daniel |
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| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Universidad de Murcia, UAM. Departamento de Física de Materiales |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Popis: | The resonant cross relaxation processes between Yb3+ and Er3+ ions in calcium alumino-silicate glasses have been quantified under selective Er3+ excitation. The infrared emission spectra, measured under steady state conditions (CW excitation to the 4I9/2 erbium level), have allowed to obtain an experimental relationship linking the transfer (Yb3+ → Er3+) and back transfer (Er3+ → Yb3+) parameters. These measurements combined with the dynamics of the main emitting levels, measured under pulsed excitation to the 2H11/2 erbium level, have allowed the fully quantification of the energy transfer parameters. The obtained values, C25 = 5.5 × 10− 18 cm3s− 1 (Yb3+ → Er3+), C52 = 1.5 × 10− 18 cm3s− 1 (Er3+ → Yb3+) and C27 = 7.6 × 10− 18 cm3s− 1 (up-conversion mechanism, estimated from the Judd-Ofelt analysis previously reported), can be used to predict the temporal evolution of the main luminescent emission bands. Work partially supported by Ministerio de Ciencia e Innovación (Spain) under project COLUMNAS (PID2019-110632RB-I00). D. Sola acknowledges the PIT2 program of the University of Murcia's own research plan for his financial support. |
| Databáze: | OpenAIRE |
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