大口径长焦距光学系统中高斯光束传播特性研究
毕业论文关键字 高斯光束 光纤激光器 M^2因子 pop分析 边缘光线
Title The transmission characteristics of Gaussian beam in large-caliber long focal length optical system
Abstract With the rapid development of laser, and the development of optical systems and instruments to the long focal length, large diameter .it becomes more urgent to study the propagation of the Gaussian beam to the long distance .The paper studied the principles and characteristics of fiber lasers and study the different types of Gaussian beam M^2 factor expression and the dissemination under different theories and types. Then, knowing the basic Gaussian beam propagation theory of the case, the model of Gaussian beams through successive models of lenses and mirrors has been established And also studied the off-axis propagation. In addition, the far-field Gaussian beam propagation simulation work has been finished by the use of matlab and zemax In zemax part, first use the pop to simulate the laser light source, then make the Gaussian beam propagation simulations successful. In matlab part, use the marginal rays, and by the incident light ray tracing to get the convergence point.
Keywords the Gaussian beam fiber lasers M^2 factor the pop analysis marginal rays
目录
1引言.1
1.1激光及其研究历史...1
1.2.1大口径光学仪器及系统：1
1.2.2高斯光束的理论研究：..3
1.2.3激光器4
1.2.4光束质量的评价6
1.3论文主要研究的内容..7
2光纤激光器原理...7
2.1光纤激光器的简介：..7
2.2光纤激光器的结构及工作原理..8
2.2.1光纤激光器的结构..8
2.2.2光纤激光器的工作原理..8
2.2.3光纤激光器的分类..9
2.2.4光纤激光器的特点..9
2.3光纤激光器的发展前景...11
3M^2因子及光束评价指标..12
3.1简介...12
3.2非傍轴光束的M^2因子...13
3.3非傍轴矢量二阶矩理论...16
3.4非傍轴光束的远场光束质量...18
4基模高斯光束的传播建模..20
4.1高斯光束沿轴传播基本规律...20
4.2高斯光束的离轴传播.24
5zemax高斯光束的传播模拟仿真27
5.1Pop分析27
5.2非序列分析.29
5.3POP分析高斯光束离轴传播...30
5.4pop分析离轴长焦距高斯光束.33
6matlab对高斯光束传播的传播建模.35
结论.37
致谢.38
参考文献39
1 引言
1.1 激光及其研究历史 1960 年, 在光学发展历史上发生了不寻常的事件: 激光器—一种具有极高亮度和极好单色性的新型光源—诞生了。激光器的发明开创了一个光学新时代, 发展了一门高技术。40 多年来，激光技术与应用发展迅猛，已与多个学科相结合形成多个应用技术领域，比如光电技术，激光医疗与光子生物学，激光加工技术，激光检测与计量技术，激光全息技术，激光光谱分析技术，非线性光学，超快激光学，激光化学，量子光学，激光雷达，激光制导，激光分离同位素，激光可控核聚变，激光武器等等。这些交叉技术与新的学科的出现，大大地推动了传统产业和新兴产业的发展。世界激光器市场可划分为三大区域：美国（包括北美）占55% ，欧洲占22%，日本及太平洋地区占 23%。在世界激光市场上日本在光电子技术方面占首位，美国占第二位；在激光医疗及激光检测方面则美国占首位；而在激光材料加工设备方面则是 德国占首位[1]。源]自=优尔-^论-文"网·www.youerw.com/ 随着激光发展的越来越快，世界进入了一个新的光学新时代。激光器发出的高斯光束的传播特性一直是研究的热点，无论在军工企业还是民用企业，对于大口径和长焦距的激光需求越来越高。所以本文要对激光传播的几个方面进行研究，从而找出大口径长焦距传播的具体实施方法。 1.2 国内外发展现状及趋势