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Scintillation properties of Yb-doped garnet crystals |
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| Authors: | Hiraku Ogino Akira Yoshikawa Jong-Ho Lee Martin Nikl Natalia Solovieva Tsuguo Fukuda |
| Affiliation: | a Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan b Institute of Physics AS CR, Cukrovarnicka 10, Prague 16253, Czech Republic |
| Abstract: | Luminescence properties of heavily Yb-doped Lu3Al5O12 (Yb:LuAG) and Lu3Ga5O12 (Yb:LGG) single crystals grown by micro-pulling-down method were characterized. Charge transfer luminescence of Yb3+ was observed in both crystals. Photoluminescence spectra, temperature dependence of emission intensity and decay kinetics of these crystals were studied. Mean decay time of about 24 ns at 90 K (Yb5%:LuAG) and 21 ns at 110 K (Yb5%:LuGG) were observed. Strong thermal quenching at room temperature was measured for both Yb:LuAG and Yb:LGG. |
| Keywords: | Scintillator Yb3+ Charge transfer Micro-pulling-down method |
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