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https://elib.bsu.by/handle/123456789/259177| Title: | Measurement of non-equilibrium carriers dynamics in Ce-doped YAG, LuAG and GAGG crystals with and without Mg-codoping |
| Authors: | Lucchini, M. T. Buganov, O. Auffray, E. Bohacek, P. Korjik, M. Kozlov, D. Nargelas, S. Nikl, M. Tikhomirov, S. Tamulaitis, G. Vaitkevicius, A. Kamada, K. Yoshikawa, A. |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
| Issue Date: | 2018 |
| Publisher: | Elsevier B.V. |
| Citation: | J Lumin 2018;194:1-7. |
| Abstract: | Non-linear absorption spectroscopy in pump and probe configuration has been used to test the population of non-equilibrium carriers in Ce-doped Y3Al5O12 (YAG), Lu3Al5O12 (LuAG), and Gd3AlxGa(5-x)O12 (GAGG) crystals with and without codoping by Mg2+ ions. A faster rise time of the induced optical density has been observed in all crystals codoped with Mg with respect to that in Mg-free samples. A significant difference in the time evolution of the differential optical density in GAGG with respect to YAG and LuAG crystals has also been measured. In both GAGG:Ce and GAGG:Ce,Mg an absorption band with maximum in the blue-green range and a decay time of 1.4 ps is present. This band is due to the absorption by free electrons before they are trapped or re-captured by Ce3+ ions. A broad absorption band in the yellow-red region with very short rise time and a decay time longer than 150 ps has been observed in all the Ce-doped garnets under study and can be attributed to the absorption from the Ce3+ excited states. |
| URI: | https://elib.bsu.by/handle/123456789/259177 |
| DOI: | 10.1016/j.jlumin.2017.10.005 |
| Scopus: | 85030847976 |
| Sponsorship: | This work was performed in the framework of the Crystal Clear Collaboration and received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skodowska-Curie grant agreement no. 644260 (Intelum). Support has been received also from the AIDA2020 European project, the ASCIMAT project under grant agreement no. 690599 and from COST Action TD1401 (FAST). We also acknowledge the support from the Belarus Foundation for Fundamental Research and by the Czech Science Foundation 16-15569S . |
| Appears in Collections: | Статьи НИУ «Институт ядерных проблем» |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 7_Lucchini_J_Lumin_2017_submitted after revision.pdf | 1,1 MB | Adobe PDF | View/Open |
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