激光发射天线仿真平台设计

Simulation design of laser transmitting telescope

为了给激光发射天线的设计优化提供一种可视化自动设计手段,采用MATLAB仿真技术构建了一种基于倒置望远镜系统结构的激光发射天线仿真平台,进行了激光发射天线的理论分析和仿真实验验证。通过灵活设置激光谐振腔关键结构参量以及倒置望远镜系统透镜组合方式,实现了发射天线发射前后的激光2维光强分布、激光3维光强分布、激光光束3维结构以及变换后激光束腰与透镜组合离焦量的关系曲线的仿真。结果表明,波长550nm的激光变换后束腰半径从0.073mm变为12.202mm,发散角从0.275°变为0.00164°,成功压缩了激光发散角;此平台进行的仿真过程形象直观,可根据需要自动优化设计出最优的激光发射天线结构。该仿真平台的构建为激光发射天线的可视化自动设计提供了全新的方法。

In order to provide a visual automatic design method for the design optimization of laser transmitting telescopes,by using Matlab simulation technology,A simulation platform of laser transmitting telescope based on an inverted telescope system structure was constructed.Theoretical analysis and experimental verification of the laser transmitting telescope were carried out.By setting the key structural parameters of the laser resonator and the lens combination of the inverted telescope system,2-D laser intensity distribution,3-D laser intensity distribution and3-D structure of laser beam before and after launch were achieved.The relationship between laser beam waist and the defocus value of the combined lens was simulated.The results show that the waist radius is from0.073nm to12.202mm after laser transformation at wavelength of550nm.The divergence angle changes from0.275°to0.00164°.Laser divergence angle is successfully compressed.The simulation process of the platform is visual and intuitive.The optimum structure of laser transmitting telescope can be automatically optimized according to the need.The simulation platform provides a new method for the automatic visual design of laser transmitting telescopes.