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题名	稀土离子掺杂氧氟及碲酸盐微晶玻璃中红外发光性能研究
作者	潘佳佳
学位类别	硕士
答辩日期	2010
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	中红外发光 稀土离子掺杂 微晶玻璃
其他题名	Investigation on mid-infrared emission properties of rare earth ions doped oxyfluoride and tellurite glass ceramics
中文摘要	微晶玻璃是通过玻璃在加热过程中进行控制晶化而制得的一种含有大量微晶体的多晶固体材料。晶体和玻璃作为传统的光功能材料，得到了广泛的研究。晶体材料虽然具有较好的光谱性能，但是由于生长困难，制备成本高，限制了它的应用。玻璃虽然容易制备，但是光谱性能较晶体差。微晶玻璃是晶体和玻璃的结合体，同它们相比，它具有抗热冲击和制备成本低的优点。通过掺入不同的发光激活离子，特别是稀土离子，能够得到不同波段的激光输出；由于稀土离子优先沉积在微晶相中，发光效率很高；此外，离子进入到晶粒中，可以增加激光吸收和发射截面。由于这些优点，使得它在激光材料应用方面有着较为广阔的应用前景。近年来中红外激光因其在医疗、光通讯、环境污染检测以及军事上的广泛用途而受到越来越多的关注，围绕着它展开的中红外激光输出材料的研究也很多，如YAG晶体，YAP晶体，YLF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。微晶玻璃作为一种很好的激光输出基质材料，一直受到很大的关注。研究者们大量研究了不同稀土离子掺杂微晶玻璃，以获得从紫外波段到近红外波段范围良好的发光性质，然而很少有研究者关注微晶玻璃中的中红外发光特性。本论文重点研究了氧氟及碲酸盐微晶玻璃的中红外发光。论文主要从以下几个方面展开： 一：研究含PbF2微晶相的微晶玻璃制备工艺，微晶化前后玻璃的物理化学特性的变化，研究Yb，Tm，Ho离子单掺或多掺的2.0μm发光性质在微晶化处理之后的变化，利用Judd-Ofelt理论和McCumber理论对样品的光谱性质的变化进行分析。研究发现808nm泵浦的Tm，Tm/Ho具有较强的2.0μm发光，经微晶化处理之后，发光强度增强，980nm泵浦Yb-Ho也具有较强的2.0μm发光，并且一些光谱性质有较大的提高。 二：研究含CaF2微晶相的氧氟微晶玻璃，成功制备出透明的微晶玻璃，研究了Er掺杂样品的发光性能。 三：研究Er掺杂TeO2-Na2O系统玻璃及微晶微晶的发光性能，重点研究了微晶化以及NdF3的引入对Er的2.7μm发光性能的影响。 最后是本论文的结论部分，系统总结了全文所得到的主要实验结果。
英文摘要	Glass ceramics is a kind of multi-crystallized solid materials that is gained by controlling the crystallization during heating period. As traditional optical materials, crystals and glasses have been researched extensively. Crystals have good spectra properties; nevertheless, the unfriendliness and high cost of preparation process restrict their applications. Glasses can be easily made, but their spectra properties are poorer than crystals. Glass ceramics makes a combination of crystals and glasses. It has advantageous points of high thermal-shock resistance and low cost of preparation. It can realize laser output working at different wavelength region by doping active ions, especially rare-earth ions. The rare-earth ions will preferentially deposit in nana-crystals, leading to high emission efficiency. Furthermore, the entry of rare-earth ions to the nana-crystals will increase the ion’s absorption and emission cross sections. These advantages make glass ceramic a good application prospect in laser materials. Recently, mid-infrared laser has drawn more and more attentions, because of its wide applications in medical treatment, optical communication, and environmental pollution detection. A lot of work has been done revolve round the mid-infrared laser output materials, such as YAG crystals, YAP crystals and YLF crystals, together with oxide glasses, fluoride glasses, tellurite glasses and fluorophosphate glasses. As a good laser output material, glass ceramics gains a lot of concerns. Much work has been done on rare-earth ions doped glass ceramics in order to gain good emission property in the region from ultraviolet to near-infrared. However, there are few reports about mid-infrared emission in rare-earth ions doped oxyfluoride glass ceramics to our knowledge. We focus our research work on the mid-infrared emission properties of oxyfluoride and tellurite glass ceramics. The frame of the work is as followings: Firstly, the fabrication process of PbF2 nanocrystals contained glass ceramics, and the physical and chemical properties changes after ceramming process have been investigated. The variation of 2.0μm emission properties in Yb，Tm，Ho singly doping or codoping oxyfluoride glasses after the ceramming process have been researched. The spectra properties of the samples have been analyzed based on the Judd-Ofelt and McCumber theories. We find that the Tm, Tm/Ho doping can realize strong 2.0μm emission under 808nm pumping. Additionally, the emission intensity of samples grows stronger after ceramming. Yb-Ho codoped samples also show strong 2.0μm emission. Some of the optical properties get promotions after ceramming process. Secondly, the glass ceramics containing CaF2 nanocrystals has been investigated. The glass ceramics with high transparency has been successfully prepared, and the emission properties of Er doped samples have been studied. Thirdly, the emission properties of Er doped TeO2-Na2O system glass and glass ceramics have been investigated. The major work is put on the influences on the 2.7μm emission caused by ceramming process and the introducing of NdF3. The last chapter is the conclusion of the paper, where we summarize the main experimental results.
语种	中文
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/16678]
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	潘佳佳. 稀土离子掺杂氧氟及碲酸盐微晶玻璃中红外发光性能研究[D]. 中国科学院上海光学精密机械研究所. 2010.

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