高稳定性长寿命空间用激光薄膜元件的研究
文献类型：学位论文
| 作者 | 苏涵韩 |
| 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 | 黄建兵 |
| 关键词 | 激光薄膜 地面模拟实验 高低温交变 真空环境 |
| 其他题名 | Investigation on laser fiilms with high stability and long life for space |
| 中文摘要 | 随着激光系统在空间领域的广泛应用，激光薄膜元件将面临恶劣复杂的空间环境的考验。激光薄膜作为激光系统中的关键部件，是该系统中非常重要但又最易损坏的薄弱环节。为解决激光薄膜元件在空间环境中的损坏或失效对空间激光系统乃至空间飞行器的影响，本文针对空间环境中的极端高低温和真空这两个因素对激光薄膜元件进行了地面模拟实验和结果分析。主要内容如下： 介绍了本文模拟实验所用模拟设备、测试仪器和激光薄膜性能测试分析的方法，为后文科学、客观地研究薄膜元件的性能稳定性打下基础。 设计并实施了极端温度交变环境的模拟实验，进行常压及真空环境下的高低温交变实验。实验前后分别测量样品的光谱、面形、抗激光损伤等并对比分析，结果显示：高低温交变后，薄膜的透射率光谱下降、光谱漂移，面形向凹陷方向发展，抗激光损伤阈值下降。其中，不同激光薄膜元件的变化幅度不同，分析发现膜层致密度和膜系结构是导致区别的主要原因，为空间激光系统用元件的设计与加工提供了参考经验。 研究了真空和温度两个环境因素对电子束沉积的HfO2/SiO2分光薄膜的应力影响：随着环境压强的减小，张应力逐渐增大，当压强达到一定值时，张应力保持不变；升温过程中薄膜表现为张应力且随着温度增大而单调递增；反之则单调递减。 |
| 英文摘要 | Laser film components will face the test from severe and complex space environment due to the wide application of laser systems in space environment recently. As a pivotal component, laser film is a very important and most easily damaged section in laser systems. In this paper, the ground simulation tests about high-low alternating temperature and vacuum were carried out and the results were analyzed to solve the influence of damage or failure of laser films on space laser system and even spacecraft. It includes the following sections. The equipments used for simulating environment tests and testing samples were introduced, as well as the methods of test and analysis, which form the base of investigating the stability of coatings’ properties scientifically and objectively. The extreme alternating temperature tests were designed and implemented under atmosphere and vacuum environment respectively. Before and after tests, spectrum, surface morphology and laser-induced damage were measured. The results suggest that spectral transmissivity at the center of wavelengths declines, as well as laser induced damage threshold (LIDT) and surface deformation develops sag direction after the temperature tests. Moreover, the main reasons for the different performance changes of different films are coatings density and structure, which will guide for the preparation of space components. The influence of vacuum and temperature on stress of HfO2/SiO2 film deposited by electron beam were studied.The results indicated that tensile stress increases with the increase of environment pressure and remains unchanged when pressure reach a certain value. With increase of the temperature, tensile stress is shown and monotone increasing and vice versa. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16711]  |
| 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 | 苏涵韩. 高稳定性长寿命空间用激光薄膜元件的研究[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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