稀土离子掺杂碲酸盐3μm光谱性质的研究
文献类型：学位论文
| 作者 | 关山 |
| 学位类别 | 硕士 |
| 答辩日期 | 2012 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 张军杰 |
| 关键词 | 3 m发光 稀土离子掺杂 碲酸盐玻璃 |
| 其他题名 | Investigations on 3 μm spectroscopic properties of rare earth ions doped tellurite glasses |
| 中文摘要 | 近年来，由于中红外激光在军事、遥感、大气污染监测、激光雷达以及激光医疗等方面的重要应用，3 m激光材料成为研究热点。围绕着它展开的中红外激光输出材料也很多，如YAG晶体、YLF晶体、YSGG晶体以及氧化物玻璃、氟化物玻璃、碲酸盐玻璃和氟磷酸盐玻璃等等。与晶体材料相比，玻璃具有制备工艺简单，制备周期短及性质可控等优点。因此，近年来稀土掺杂的中红外玻璃材料的研究受到人们的重视。作为激光器和放大器基质材料，碲酸盐玻璃具有很多优良的性能，如：（1）氧化物玻璃中最低的声子能量；（2）宽的透过范围；（3）高的折射率和非线性折射率（4）大的稀土离子溶解度；（5）优于氟化物玻璃的稳定性和耐腐蚀能力。本文研究了稀土离子掺杂碲酸盐玻璃的3 m发光性能。 本论文包括以下六个部分：文献综述；实验方法及理论基础；Er3+单掺TeO2-ZnO-Na2O玻璃的3 m光谱性质研究；Nd3+/ Er3+双掺TeO2-ZnO-Na2O玻璃3 m光谱性质研究；Yb3+/ Er3+双掺碲酸盐玻璃3 m光谱性质研究；结论。 论文首先详细介绍了3 m输出激光材料的研究进展。概述了涉及本课题的3 m发光稀土离子及碲酸盐玻璃基质，然后提出本论文的研究思路。 在论文的第二部分，介绍了本文的研究方法，详细介绍了实验的样品制备、性能测试及光谱参数的理论计算，包括Judd-Offelt理论和McCumber理论。 论文的第三，四，五部分是本论文的核心部分，详细研究了稀土离子掺杂碲酸盐玻璃的光谱性能。采用熔融退火法制备了稀土离子掺杂碲酸盐玻璃。计算Er3+离子在碲酸盐玻璃中的自发辐射跃迁几率、荧光分支比等光谱参数。分析了Er3+离子单掺碲酸盐玻璃3 m光谱性能及能量跃迁机理。研究了Er3+离子浓度变化对3 m发光性能的影响。研究了Nd3+/Er3+双掺碲酸盐玻璃的3 m光谱性质分析其能量跃迁机理。研究了Yb3+/Er3+双掺不同碲酸盐玻璃基质的3 m光谱性质，分析了其能量跃迁机理并比较其光谱性质的差异。 最后是本论文的结论部分，总结了全文的实验结果，同时指出本研究存在的不足和需要进一步研究之处。 |
| 英文摘要 | In recent years, owing to various useful applications, including military, remote sensing, atmosphere pollution monitoring, eye-safe laser radar, and medical surgery, much interest has been devoted to searching for new materials to use as hosts for mid-IR lasers operating in the wavelength region around 2.7 m. There are many kinds of mid-infrared laser output materials, such as YAG crystals, YLF crystals and YSGG crystals, together with oxide glasses, fluoride glasses, tellurite glasses and fluorophosphate glasses. The glass materials exhibit more advantages such as easy preparation, short producing period, and controllable physical properties over the single crystal materials, thus rare earths doped mid-infrared glass materials have attracted increasing attention. As laser or amplifier host materials, tellurite glasses combine with the attributes of (1) a relative low phonon energy among oxide glass formers; (2) a reasonably wide transmission region; (3) high refractive index and high non-linear indices; (4) capable of incorporating large concentrations of rare-earth ions into the matrix; (5) good glass stabilities and corrosion resistances, which are better than those in fluoride glasses. This work reports the investigations on 3 m spectroscopic properties of rare earth ions doped tellurite glasses. This thesis includes the following six sections: literature summarizations; experimental methods and theoretical basis; investigation on 3 m spectroscopic properties of Er3+ singly-doped tellurite glasses; investigation on 3 m spectroscopic properties of Er3+/Nd3+ co-doped tellurite glasses; investigation on 3 μm spectroscopic properties of Yb3+/ Er3+ co-doped tellurite glasses; conclusions. Firstly, the foregoing results of 3 μm laser materials are introduced in details. The basic knowledge related to 3 μm rare earth ions and tellurite glass is summed up, then we put forward research ideas in this paper. In section 2, the experiment methods are introduced, including the sample preparation procedures, physical and spectroscopic properties measurements, and the spectroscopic parameters calculation using Judd-Offelt theory and McCumber theory. As the core section of this thesis, section 3, 4 and 5 present the results and discussions on physical, chemical, thermal and spectroscopy properties in rare earth ions doped tellurite glasses. Rare earth ions doped tellurite glasses are prepared by melt-quenching method. To evaluate the spectroscopic properties of Er3+ in tellurite glasses, the radiative transition and branching ratios of Er3+ are calculated. 3 m spectroscopic properties and energy transfer mechanism of Er3+ singly-doped tellurite glasses are analyzed. Then the effect of Er3+ concentration on 3 m emission properties is discussed. 3 m spectroscopic properties of Nd3+/Er3+ doubly-doped are investigated and analyzed, and energy transfer mechanisms are discussed. 3 m spectroscopic properties of Yb3+/Er3+ doubly-doped tellurite glasses are investigated and analyzed, and energy transfer mechanisms are discussed. Finally, all results of present work are outlined, and it is suggested that something should be done in the next stage. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16735]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 关山. 稀土离子掺杂碲酸盐3μm光谱性质的研究[D]. 中国科学院上海光学精密机械研究所. 2012. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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