| Energy transfer and frequency upconversion in Er~（3＋）-Yb~（3＋） codoped oxy-fluoro-tungstosilicate glasses |
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| 引用本文： | 揭光涛,赵高凌,汪建勋,韩高荣.Energy transfer and frequency upconversion in Er~（3＋）-Yb~（3＋） codoped oxy-fluoro-tungstosilicate glasses[J].中国稀土学报(英文版),2012,30(5):422-425. |
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| 作者姓名： | 揭光涛 赵高凌 汪建勋 韩高荣 |
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| 作者单位： | State Key Lab of Silicon Material and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| 基金项目： | supported by the Fundamental Research Funds for the Central Universities |
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| 摘 要： | Er3+-Yb3+ codoped oxy-fluoro-tungstosilicate glasses with infrared-to-visible frequency upconversion luminescence were prepared by melting quenching in air.The effects of Er3+ doping on the optical properties of the samples were measured by means of techniques such as optical absorption spectra and photoluminescence spectra.The results showed that intense green and red signals centered at 546 and 665 nm,corresponding to the 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions of Er3+ by a multiphoton stepwise phonon-assisted excited-state absorption process,respectively,were simultaneously observed by exciting the samples with a diode laser operating at 980 nm at room temperature.The upconversion process was found very sensitive to Er3+ content at a constant Yb2O3 content of 5 mol.%.With the increase of Er3+ content from 0.5% to 1.5%,the upconversion intensity increased gradually.Further increasing of Er3+ content to 3.0% resulted in a significant fluorescence quenching.Moreover,the possible upconversion mechanisms were discussed based on the energy-matching conditions and the quadratic dependence on excitation power.
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| 关 键 词： | oxy-fluoro-tungstosilicate rare earth ions upconversion luminescence glass |
| 收稿时间： | 31 May 2011 |
Energy transfer and frequency upconversion in Er~（3＋）-Yb~（3＋） codoped oxy-fluoro-tungstosilicate glasses |
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| JIE Guangtao,ZHAO Gaoling,WANG Jianxun,HAN Gaorong.Energy transfer and frequency upconversion in Er~（3＋）-Yb~（3＋） codoped oxy-fluoro-tungstosilicate glasses[J].Journal of Rare Earths,2012,30(5):422-425. |
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| Authors: | JIE Guangtao ZHAO Gaoling WANG Jianxun HAN Gaorong |
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| Affiliation: | (State Key Lab of Silicon Material and Department of＇Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | Er3+-Yb3+ codoped oxy-fluoro-tungstosilicate glasses with infrared-to-visible frequency upconversion luminescence were prepared by melting quenching in air.The effects of Er3+ doping on the optical properties of the samples were measured by means of techniques such as optical absorption spectra and photoluminescence spectra.The results showed that intense green and red signals centered at 546 and 665 nm,corresponding to the 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions of Er3+ by a multiphoton stepwise phonon-assisted excited-state absorption process,respectively,were simultaneously observed by exciting the samples with a diode laser operating at 980 nm at room temperature.The upconversion process was found very sensitive to Er3+ content at a constant Yb2O3 content of 5 mol.%.With the increase of Er3+ content from 0.5% to 1.5%,the upconversion intensity increased gradually.Further increasing of Er3+ content to 3.0% resulted in a significant fluorescence quenching.Moreover,the possible upconversion mechanisms were discussed based on the energy-matching conditions and the quadratic dependence on excitation power. |
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| Keywords: | oxy-fluoro-tungstosilicate rare earth ions upconversion luminescence glass |
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