大口径光学材料应力双折射检测技术
文献类型：学位论文
| 作者 | 张潇 |
| 学位类别 | 硕士 |
| 答辩日期 | 2013 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 刘德安 |
| 关键词 | 大口径 应力双折射 球面反射镜 米勒矩阵 相位误差 |
| 其他题名 | Birefringence Measurements of Large-scale Optical Materials |
| 中文摘要 | 大口径光学材料的双折射检测在高功率激光材料生长和加工中具有重要应用，其加工和制造过程中更是难以避免应力的影响，例如大口径的钕玻璃应力不均匀的情况下会产生调制光束从而影响整个ICF驱动器的负载能力，大口径的晶体的倍频效率也会大幅度的降低。在大口径的光学材料及元件的制造中，精确确定应力双折射及其空间分布是极其重要的。 利用米勒矩阵分析了四步干涉测量方案的原理，搭建了小口径光学玻璃测量光路并进行应力定量测试，通过实验验证了该方案对于消除光学元件不均匀的影响有很好的效果。 针对大口径光学材料的特点采用了基于球面反射镜的测量方案。分析了发散的球面波往返样品两次产生的径向相位误差，并且推导出不同发散角的球面波产生的径向相位误差解析表达式，对大口径晶体材料应力测量产生的误差提出了校正算法。 分别对大口径光学玻璃进行了静态应力和动态应力测量。利用相干光对样品进行了定量测试，得出了整个玻璃二维平面上的应力分布，同时利用白光光源提取了应力测量图样，将白光与相干光的图样进行了比对。分别对光学玻璃施加外力和热的作用对其应力变化进行动态测量，并且将白光和相干光的动态图样进行比对。 |
| 英文摘要 | The birefringence measurements of large-scale optical components are important on the growing and manufacturing of high-power laser materials. And strain makes great impact on the manufacturing of the materials. For example, large-scale Nd glass will modulate beams to lower the burden of the ICF facility if influenced by inhomogeneous strains. The efficiency of large-scale frequency doubling crystals will decrease in the same way. Therefore it is very important to conduct the birefringence distribution for large-scale materials. Four Step Method is analyzed with Muller matrix and birefringence for small-scale optical glass is measured. The results show that the method can get excellent effect at eliminating the nonuniformity of optical components. We adopt a spherical mirror scheme to measure the large-scale optical materials. Phase errors by round-trip spherical wave are analyzed in detail, furthermore, mathematic expressions are calculated out. In addition, a calibration method is proposed to compensate the radial phase errors to improve the measurement precision for large-scale birefringence crystals. At last a series of experiments are performed to measure the strain distribution throughout the large-scale materials in static and dynamic condition respectively. Coherent lights are employed to illuminate the large-scale glass to make a quantitative detection, at the same time, white light is used to extract some patterns for spherical mirror configuration and the patterns are compared with results by coherent light. Moreover, we apply external force and heat to optical glass and conduct dynamic birefringence measurement. Related patterns by white light and coherent light is compared. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16763]  |
| 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 | 张潇. 大口径光学材料应力双折射检测技术[D]. 中国科学院上海光学精密机械研究所. 2013. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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