| Tm3+掺杂GeO2-AlF3-Na2O玻璃的制备与光谱特性 |
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| 引用本文： | 王勇超.Tm3+掺杂GeO2-AlF3-Na2O玻璃的制备与光谱特性[J].光电子．激光,2011(2):232-236. |
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| 作者姓名： | 王勇超 |
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| 作者单位： | 宁波大学光电子功能材料重点实验室;华南理工大学光通信材料研究所特种功能材料教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(60777030); 浙江省杰出青年自然科学基金资助项目(R4100364); 宁波市重点实验室开放基金资助项目(2007A22010); 宁波大学王宽诚幸福基金资助项目 |
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| 摘 要： | 用高温熔融法制备了Tm2O3掺杂深度分别为1、2、3、4和5 wt%的82GeO2-8AlF3-10Na2O(摩尔比)的玻璃.从吸收光谱特性出发,应用Judd-Ofelt(J-O)理论,计算得到了Tm3+的J-O强度参数(Ω2,Ω4,Ω6)及Tm3+各激发态能级的自发跃迁几率、荧光分支比以及辐射寿命等光谱参量.在808...
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| 关 键 词： | 光纤材料 氟锗酸盐玻璃 Judd-Ofelt(J-O)理论 红外光谱特性 |
Fabrication and spectral properties of Tm~(3+)-doped GeO_2-AlF_3-Na_2O glasses |
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| WANG Yong-chao.Fabrication and spectral properties of Tm~(3+)-doped GeO_2-AlF_3-Na_2O glasses[J].Journal of Optoelectronics·laser,2011(2):232-236. |
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| Authors: | WANG Yong-chao |
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| Affiliation: | WANG Yong-chao1,XIA Hai-ping1,ZHANG Jian-li1,ZHANG Qin-yuan2(1.Laboratory of Photo-electronic Materials,Ningbo University,Ningbo 315211,China,2.Key Laboratory of Specially Functional Materials of Education Ministry of China,Institute of Optical Communication Materials,South China University of Technology,Guangzhou 510641,China) |
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| Abstract: | The 82GeO2-8AlF3-10Na2O(molar ratio) glasses containing Tm2O3 in 1,2,3,4,and 5 wt% concentration,respectively were fabricated by conventional high temperature melting method.According to the Judd-Ofelt(J-O) theory,the JO strength parameters(Ω2,Ω4,Ω6) of Tm3+,the radiative transition probabilities,the branching ratios and the radiative lifetimes were calculated.The fluorescence spectra(with 808 nm LD excitation) at ～1.47 and ～1.8 μm for various concentrations of Tm3+-doped glasses were observed.The results show that the emission intensity at ～1.8 μm reaches the maximum when the Tm2O3-doping concentration is ～3 wt.%,and then decreases as doping concentration increases further.Meanwhile,the absorption and emission cross sections corresponding to the 3F4→3H6 transitions of Tm3+ at 1.8 μm were estimated based on McCumber theory,and the gain cross section was calculated.The glasses are the new candidate materials for mid-infrared laser devices. |
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| Keywords: | fiber material fluorogermanate glasses Judd-Ofelt(J-O) theory infrared spectral properties |
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