| Optical Spectroscopy of Er^3＋ and Er^3＋/Yb^3＋ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses |
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| 引用本文： | 夏海平,章践立,王金浩,张约品.Optical Spectroscopy of Er^3＋ and Er^3＋/Yb^3＋ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses[J].中国稀土学报(英文版),2006,24(4):408-412. |
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| 作者姓名： | 夏海平 章践立 王金浩 张约品 |
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| 作者单位： | Laboratory of Photo-Electronic Materials, Ningbo University, Ningbo 315211, China |
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| 基金项目： | 国家自然科学基金，the Doctoral Science Foundation of Ningbo City |
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| 摘 要： | The （60 - x）Bi2O3 - xGeO2-30B2O3-10ZnO （x = 5, 10, 20, 30 molar percent） glasses doped with Er^3＋ and Er^3＋/Yb^3＋ were fabricated using the melting method. The thermal stability of the glasses was studied with their DTA curves. The results show that the difference between the glass transition temperature and the crystallization onset temperature increases with the increase of GeO2 content, indicating that the thermal stability of the glass has become better. The absorption spectra were recorded and the stimulated emission cross sections were calculated using the McCumber theory. The Ω2, O4, and Ω6 parameters,the transition probability, the radiative lifetime, and the fluorescence branch ratio of Er^3＋ for optical transition were calculated from their absorption spectra in terms of reduced matrix U^（t）（λ = 2, 4, 6） character for optical transitions. The infrared emission of Er^3＋ was measured upon excitation with 970 nm light and the full width at half-maximum （FWHM） was estimated from the emission spectra. The pumping efficiency and the intensity of the emission at the 1.54 μm band of Er^3＋ were enhanced considerably by co-doping Yb^3＋ .
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| 关 键 词： | Bi2O3-GeO2-B2O3-ZnO 玻璃 GeO2 稀土 掺杂 热稳定性 光谱学 |
| 文章编号： | 1002-0721（2006）04-0408-05 |
| 收稿时间： | 2005-08-11 |
| 修稿时间： | 2006-03-10 |
Optical Spectroscopy of Er3+ and Er3+/Yb3+ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses |
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| Xia Haiping,Zhang Jianli,Wang Jinhao,Zhang Yuepin.Optical Spectroscopy of Er3+ and Er3+/Yb3+ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses[J].Journal of Rare Earths,2006,24(4):408-412. |
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| Authors: | Xia Haiping Zhang Jianli Wang Jinhao Zhang Yuepin |
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| Affiliation: | 1. Department of Physics, Thamar University, Thamar, Yemen;2. School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia;3. Low Dimensional Materials Research Centre, Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia;1. International Advanced Research and Education Organization, Tohoku University, 6-3 Aramaki, Aoba-Ku, Sendai 980-8578, Japan;2. College of Mechanics and Materials, Hohai University, 1-Xikang Road, Nanjing 210098, China;3. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai 980-8577, Japan;1. Department of Mathematics, Nanjing University, Nanjing, 210093, PR China;2. School of Mathematics and Statistics, Xi''an Jiaotong University, Xi''an, 710049, PR China;1. B. Verkin Institute for Low Temperature Physics, 47, Lenin ave., 61103 Kharkiv, Ukraine;2. Faculty of Mathematics, University of Vienna, Oskar-Morgenstern-Platz 1, 1090 Wien, Austria;3. International Erwin Schrödinger Institute for Mathematical Physics, Boltzmanngasse 9, 1090 Wien, Austria |
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| Abstract: | The (60-x)Bi2O3-xGeO2-30B2O3-10ZnO (x=5, 10, 20, 30 molar percent) glasses doped with Er3 and Er3 /Yb3 were fabricated using the melting method. The thermal stability of the glasses was studied with their DTA curves. The results show that the difference between the glass transition temperature and the crystallization onset temperature increases with the increase of GeO2 content, indicating that the thermal stability of the glass has become better. The absorption spectra were recorded and the stimulated emission cross sections were calculated using the McCumber theory. The Ω2, Ω4, and Ω6 parameters,the transition probability, the radiative lifetime, and the fluorescence branch ratio of Er3 for optical transition were calculated from their absorption spectra in terms of reduced matrix U(t) (λ=2, 4, 6) character for optical transitions. The infrared emission of Er3 was measured upon excitation with 970 nm light and the full width at half-maximum (FWHM) was estimated from the emission spectra. The pumping efficiency and the intensity of the emission at the 1.54 μm band of Er3 were enhanced considerably by co-doping Yb3 . |
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| Keywords: | Bi-based glass GeO2 Er3 Er3 /Yb3 thermal stability optical spectroscopy rare earths |
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