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Influence of Ce on the luminescence properties of Er/Yb:YVO4 crystals |
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| Authors: | Kun ZhangChengchun Zhao Hongmei ZhongYin Hang |
| Affiliation: | a Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China b State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
| Abstract: | YVO4 single crystals doped with Ce3+, Er3+ and Yb3+ ions were grown by the Czochralsski technology. The luminescence properties of Er3+/Yb3+:YVO4 single crystals with different concentration of Ce3+ were studied, and the energy transfer mechanism between Er3+, Yb3+ and Ce3+ was discussed based on their energy level properties. The branching ratios of the 4I11/2 → 4I13/2 transition in different samples were calculated. The results indicate that codopants of Ce3+ greatly enhance the population rate of the 4I13/2 level due to the fast resonant energy transfer between Er3+ and Ce3+, i.e., 4I11/2(Er3+) + 2F7/2(Ce3+) → 4I13/2(Er3+) + 2F5/2(Ce3+). |
| Keywords: | YVO4 crystals Cerium Energy transfer Czochralsski |
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