| 题名 | 堆抽运激光器研究及光电互感器设计 |
| 作者 | 柴雄良 |
| 学位类别 | 博士 |
| 答辩日期 | 2004 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 程兆谷 |
| 关键词 | 脉冲反应堆 激光腔 盒式多折腔 能量沉积 本征效率 光电互感器 |
| 其他题名 | Study on a novel reactor-pumped laser and design on electro-optical current transducer |
| 中文摘要 | 本论文工作是结合中国科学院上海光学精密机械研究所与西北核技术研究所合作项目“堆抽运激光器研究”和上海市第一期光科技项目“光电互感器研究”而进行的。论文全面系统地阐述了堆抽运激光的研究意义和优势问题，对其理论特性和实现技术进行了综述；构建了盒式多折腔激光体系，并对该系统进行了深入的理论分析和实验研究；设计了光纤电流互感器。具体进行了如下几个方面的工作：1．总结了近四十年来堆抽运激光的相关成果，为堆抽运激光器拟定了有特色的技术实验方案。介绍了核抽运激光的诞生及其发展和堆抽运激光的应用前景，中子的发现以及抽运源的不同模式；还介绍实验用的脉冲反应堆的结构、中子的产生，它与别的反应堆的不同之处是辐照腔中直接提供热中子流，因此在抽运腔外不需要专门设置慢化体。2．提出了实现盒式多折腔激光系统的基本思路和策略，为论文工作提供了方法论上的指导。对3He-Ar-xe激光体系理论模型和激励机制进行了研究，并结合前人的研究成果对圆管型抽运腔的能量沉积与抽运腔参数关系，堆抽运激光能量转换效率以及激发模式和本征效率进行了深入的探讨。并利用理论模型与前人的实验结果进行了验证，为激光腔的设计提供了理论基础。首次完整地结合设计的盒式多折抽运腔，对抽运腔的激发模式、本征效率和输出腔镜的透过率等问题进行了深入研究；通过数值模拟了核反应产物离子在抽运腔内能量沉积；讨论了多折腔的耀合优化等问题。3．构建了新型的盒式多折腔抽运腔及其激光体系理论模型，通过对体系的理论分析和实验研究实现了技术的结合。利用我们设计新型的盒式多折光路腔和与有特色的反应堆匹配实验，在国内还是首次，在国外也鲜见报道，而且实现了激光输出，其输出功率为125mW，脉宽为625ms。堆抽运激光在军事、切割、焊接、表面处理、同位数分离等方面有着广阔的应用前景。4．分析了多折腔的结构设计和能量特点。根据对多折腔的理论研究，首先提出了一类具有多折光路、与反应堆有较高祸合效率的矩形盒式激光腔，它的特点是能充分利用热中子辐射腔实现增益，以便提高输出光强度，并对具体物理参数进行了分析。5．在总结前人研究的基础上，从理论上设计了有特点的供能光路和有效减少外界环境干扰的光纤电流互感器，并发表了相关三篇论文。 |
| 英文摘要 | This paper is based on the two cooperative projects on "reactor-pumped laser (RPL)" supported by Chinese Academy of Sciences Northwest Institute of Nuclear of Technology and "Study on electro-optical current transducer" supported by Shanghai photo-science and technology project. The significance and superiority of the research of the RPL are systematically described in this dissertation. The characteristics and the performance RPL are summarized. A folded box-like resonator for RPL is constructed. The system is analyzed theoretically and experimentally. A novel OCT is designed. The following works have been done: 1. Interrelated production of RPL about 40 years are summarized, which studies out characteristic technique scheme for RPL. This paper introduces the history of nuclear-pumped lasers, neutron, reactor-pumped lasers and its foreground of applications. Here three main patterns of energy source are also demonstrated. The elementary principle of the reactor-pumped is introduced. The structure of reactor and the producing process of neutron of Xi'an pulse reactor are presented mainly. Its prominent characteristics are that the radiation cavity can supply directly thermal neutrons. 2. The general idea of folded box-like resonator for RPL is proposed, which performs the methodology of the whole thesis. The nuclear RPL model 3He-Ar-Xe is proposed and the power efficiency function of the circular cell is also derived in the present work. The power efficiency built is as function parameters of the cell and transition efficiency, the theoretical model is checked using former experimental. The present work will benefit the future experimental designs. For the first time, the power efficiency for the box-like cell built is as a function of gas temperature (energy deposition), cell pressure, xenon concentration, He and Ar fraction. The simulation calculation of energy deposition in laser cell is improved. The results show that gas components in box-like cell decide the laser efficiency. Only when the cell thickness and gas pressure are a special function, the deposition in cell researches its maximum. 3. A novel box-like resonator which has a zigzag optical path is constructed and theoretical model of laser system is presented. Through theoretical analysis and experimental study, a new method has been implemented. Based on the novel box-like resonator we designed and the characteristic reactor, a suited experiment is done, it is the first time at home, however, little work has been reported at broad, and also laser is attained, the laser power is 125mW, average pulse width is 625ms. The RPL has a good application prospect in military affairs, cut, welding, surface processing and isotope separation 4. The structure design and energy characteristic are also analyzed. On the basis of theoretical study on the RPL system of a rectangle chamber, a folded box-like resonator pulsed reactor pumped cell is designed, which has a zigzag propagation inside and high coupling efficiency with the nuclear reactor. The equivalent length of gain cell in this device is multiplied under the condition of same neutron resonator so as to increase the output of laser. 5. Finally, a novel electro-optical current transducer is designed through summarizing the merits and demerits of domestic and overseas, it can reduce effectively environmental effect and has a novel supplied power circuit in theory, and three papers have been published |
| 语种 | 中文 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/15311]  |
| 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 | 柴雄良. 堆抽运激光器研究及光电互感器设计[D]. 中国科学院上海光学精密机械研究所. 2004. |
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