环境友好型重金属氧化物玻璃物化及其光谱性质
文献类型：学位论文
| 作者 | 高国军 |
| 学位类别 | 硕士 |
| 答辩日期 | 2009 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 胡丽丽 |
| 关键词 | 铋酸盐玻璃 碲酸盐玻璃 三阶非线性 光谱性质 |
| 其他题名 | Physicochemical and spectroscopic properties of environment friendly heavy metal oxide glasses |
| 中文摘要 | 重金属氧化物玻璃具有优良的红外透过性能、高折射率、高非线性折射率、低声子能量和超快光响应速度。因此，对重金属氧化物玻璃物化及其光谱性质的研究具有重要意义。 在文献综述部分，首先对重金属氧化物玻璃的研究进展、非线性光学理论和稀土离子发光理论进行了简单概述，进而提出本文的研究思路和内容。 在论文的第二部分，介绍了实验方法和理论计算，主要包括玻璃的制备、性质测试和光谱理论计算。 论文的第三部分研究了铋酸盐玻璃的物化以及结构性质。结果表明：1）随着Bi2O3含量的增加，玻璃的密度和折射率增加，热稳定性能变差，而在玻璃中引入少量的SiO2，玻璃的热稳定性明显改善；2）红外透过光谱研究表明，随着Bi2O3和SiO2含量的增加，玻璃的红外透过性能改善，且在熔制过程中通氧可以有效去除玻璃中的OH基，玻璃的红外透过性能明显改善；3）红外吸收和Raman研究表明，随着Bi2O3含量的增加，[BiO3]基团逐步被[BiO6]基团所取代，[BO4]基团逐步向[BO3]基团转变，[BiO6]基团和[SiO4]基团耦合在了一起，形成了Bi-O-Si的振动模式。 论文的第四部分研究了Tm3+/Ho3+离子共掺碲酸盐玻璃在2 μm波段的光谱性质。结果表明：1）当Tm3+离子浓度为1 mol％，Ho3+离子浓度为1 mol％时，玻璃在2 μm波段的发光强度达到了最大值，5I7 →5I8能级的自发跃迁几率为265.7 s-1，Ho3+离子在2 μm附近的最大受激发射截面为7.0×10-21 cm2；2）在碲酸盐玻璃中引入5 mol％的Bi2O3，玻璃的密度和折射率增加，热稳定性下降，5I7 →5I8能级的自发跃迁几率增大为466.8 s-1，Ho3+离子在2 μm附近的最大受激发射截面增大为1.06×10-20 cm2；3）在碲酸盐玻璃中引入10 mol％ZnF2，玻璃的热稳定性、密度和折射率略有下降，玻璃基质中的OH基含量明显下降，5I7 →5I8能级的自发跃迁几率减小为224.7 s-1，Ho3+离子在2 μm附近的最大受激发射截面增大为8.8×10-21 cm2。 最后是本论文的结论部分，概括了全文的实验研究结果。 |
| 英文摘要 | Heavy metal oxide glasses are characterized by excellent infrared transmission, high refractive index, high nonlinearity refractive index, small phonon energy and ultrafast optical response. Therefore, it is of importance to study physicochemical and spectroscopic properties of heavy metal oxide glasses. In the section of literature summarization, the research history of heavy metal oxide glass, nonlinearity optics theory and luminescence theory of rare-earth ions were introduced in details. Then the research content and purpose of this thesis were presented. In the second section of this thesis, the experimental method and theoretical calculation including glass preparation, glass property measurement and spectroscopic theory are introduced. In the third section, physicochemical properties and structure characteristic of bismuth glasses were studied. The results show that: 1) with increasing Bi2O3 content, the thermal stability of glasses was decreased, while the density and refractive index of glasses were increased, and with addition of proper SiO2, the thermal stability of glasses was improved greatly; 2) Studies on the composition dependence of transmittance in mid-infrared region shows that with increase of Bi2O3 and SiO2 contents, the transmittance property in mid-infrared region was improved, and most of OH¯ groups were removed by bubbling oxygen during melting, so the transmittance property in mid-infrared region was improved greatly; 3) Studies on the composition dependence of IR absorption and Raman spectra show that addition of bismuth content causes a progressive conversion of [BO4] to [BO3] units and [BiO3] to [BiO6] units, and [BiO6] and [SiO4] units were linked together forming the vibration mode of Bi-O-Si. In the forth section, spectroscopic properties of Tm3+/Ho3+ ions co-doped tellurite glasses in 2 μm region were investigated. We could draw the following conclusions: 1) the maximum 2.0 μm emission intensity assigned to the 5I7→5I8 transition of Ho3+ was achieved at 1 mol% Tm2O3 and 1 mol% Ho2O3 concentrations in our tellurite glass, the spontaneous emission probability of 5I7 →5I8 of Ho3+ was 265.7 s-1, and the maximum stimulated emission cross-sections of Ho3+ near 2.0 μm was 7.0×10-21 cm2; 2) with addition of 5 mol% Bi2O3 to tellurite glass, the thermal stability of glass was decreased, while the density and refractive index were increased, the spontaneous emission probability of 5I7 →5I8 of Ho3+ was increased to 466.8 s-1, and the maximum stimulated emission cross-sections of Ho3+ near 2.0 μm was increased to 1.06×10-20 cm2; 3) With addition of 10 mol% ZnF2 to tellurite glass, the density, refractive index and thermal stability of glasses were lowered slightly, OH¯ absorption was depressed greatly, the spontaneous emission probability of 5I7 →5I8 of Ho3+ was decreased to 224.7 s-1, and the maximum stimulated emission cross-sections of Ho3+ near 2.0 μm was 0.88×10-20 cm2. The fifth section of this thesis is the summarization of this work. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16417]  |
| 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 | 高国军. 环境友好型重金属氧化物玻璃物化及其光谱性质[D]. 中国科学院上海光学精密机械研究所. 2009. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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