大口径长焦距光学系统中高斯光束传播特性研究
时间:2020-12-06 13:12 来源:毕业论文 作者:毕业论文 点击:次
| 摘要随着激光的快速发展，以及光学系统及仪器往长焦距、大口径上的发展，对高斯光束远距离的传播研究变得迫在眉睫，本文研究了光纤激光器的原理及其特点，同时针对不同理论下的不同类型的高斯光束的 M^2 因子的表达式以及传播进行了研究。然后在知道高斯光束基本传播理论的情况下，建立高斯光束通过连续透镜和反射镜的模型，并同时研究了离轴的传播规律。另外，利用 zemax和 matlab分别对高斯光束的远场传播进行仿真工作，在 zemax 部分，用 pop 分析模拟激光光源，然后对光路进行高斯光束传播的模拟。在 matlab部分，利用边缘光线，通过对入射光线的光线追迹，从而得到汇聚点。 60394 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
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