YAG基质透明陶瓷的制备及光学性能研究
文献类型：学位论文
| 作者 | 李宇焜 |
| 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 | 周圣明 |
| 关键词 | Nd:YAG, Nd:Ce:YAG，透明激光陶瓷，显微结构，光学性能 |
| 其他题名 | Fabrication and optical properties of YAG-based tranparent ceramics |
| 中文摘要 | 稀土离子掺杂的忆铝石榴石(YAG)是目前使用最广泛的激光介质材料，但随着激光器的进一步发展，单晶与玻璃材料的应用限制逐渐暴露出来。单晶主要是由于受生长技术、生长条件的限制，实现大尺寸比较困难，而分凝效应也使稀土掺杂离子的浓度难以提高，另外单晶的生产成本也较高。而玻璃激光介质的缺点是其热导率较低，难以达到连续工作的要求。因此，透明陶瓷技术蓬勃发展起来，其相对单晶的优点有:较易实现大尺寸、机械性能好、掺杂浓度高、光学均匀性好、制备周期短，生产成本低、易实现光学功能复合、热导率高、熔点高。而与玻璃相比，透明陶瓷的优点是热导率高。 |
| 英文摘要 | Yttrium aluminum garnet (YAG), which belongs to the isometric ystem and Oh(10)一Ia3d space group, is the most widely used laser host materials. By traditional Czochralski method, Nd3+ doping concentration is extremely low because of the limitation of Nd3+ separation coefficient (only 0.18 in YAG crystal lattice). With the development of high power solid lasers, the disadvantages of the Nd:YAG single crystal, such as long growth cycle, complicated fabrication process, high cost, size limitation and concentration gradient of doping ion, are exposed gradually. The Nd:YAG polycrystalline transparent ceramics have been proved as a excellent laser materials due to its prominent advantages in size control, flexible geometry design, mechanical property, thermal behavior, doping concentration, optical homogeneity, production cost and cycle, complex function, etc. With the development of powder preparing, shaping and vacuum sintering technology, the optical quality of transparent polycrystalline Nd:YAG is equivalent or even better than monocrystal Nd:YAG. And compared to Nd-glass, Nd:YAG transparent ceramics owns a much better thermal property and are more easily to achieve continuous laser output. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16800]  |
| 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 | 李宇焜. YAG基质透明陶瓷的制备及光学性能研究[D]. 中国科学院上海光学精密机械研究所. 2010. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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