Thermo-Optical (TOP) analysis of transmissive elements for laser systems
Thermo-Optical (TOP) analysis of transmissive elements for laser systems
复制标题
激光系统透射元件的热光 (TOP) 分析
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
P. Loosen
中科院分区：
文献类型：
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作者：
A. Gatej;A. Richmann;O. Pütsch;P. Loosen
提高激光束质量使热透镜再次成为热门话题，并需要热光学模拟来改善经典光线跟踪并实现热像差光学系统的优化可能性。本文总结了使用加权最小二乘近似算法耦合有限元法和光线追迹的方法，并以玻璃和塑料的CO2激光抛光系统为例，展示了耦合模拟的能力。可以证明，该算法可以用于高阶像差的分析，因为该应用程序包含高斯到顶帽转换透镜组，其遭受热梯度。最后，讨论了在光学模拟中分析热梯度的好处和进一步的发展。
Increasing laser beam qualities make thermal lensing again a hot topic and demand for a thermo-optical simulation for improving classical ray tracing and enabling optimization possibilities for thermally aberrated optical systems. This paper summarizes the approach for coupling FEM and ray tracing using a weighted least squares approximation algorithm and demonstrates the abilities of the coupled simulation in the case of a CO2 laser system for polishing of glass and plastics. It can be demonstrated that the algorithm can be used for the analysis of higher order aberrations, since the application contains a Gaussian to top-hat conversion lens group which suffers from thermal gradients. Finally, the benefits and further developments of analyzing thermal gradients in optical simulation are being discussed.