节点文献
Cassegrain激光发射系统的光路设计
Design of the Beam Path in Cassegrain Laser Transmitting System
【Author】 MAO Hong-min, XU Jing, ZHEN Sheng-lai, MA Yu-fen, YU Ben-li (Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Ministry of Education, Anhui University, Hefei 230039, China)
【机构】 安徽大学光电信息获取与控制国家教育部重点实验室；
【摘要】 为了提高激光探测系统的激光发射功率,在出射光为基模高斯光束的光路设计中,根据高斯光束经过光学系统的变换与传输特性,分析了Cassegrain望远镜的遮拦比以及入射光束束腰半径对光功率透过率的影响,给出了遮拦比与发射孔径处的光斑尺寸之间的最佳匹配关系,得出了离焦误差(安装误差)为0.2mm时对出射光斑尺寸影响不大,最后结合实例进行了数值计算与分析。
【Abstract】 For improving laser transmitting power in laser detection optical system, by propagating and transforming of Gaussian beam through optical system, the effect of power transmission due to the obscuring ratio of Cassegrain telescope and girdling radius of incident beam were analyzed, and the best matching between the obscuring ratio and spot size at transmitting aperture were given. At the meantime we obtained the effect of spot size of emergent beam caused by defocusing error (installation error) was tiny when it was equal to 0.2 millimeter. In the end numerical calculation and analysis by example were also given.
【Key words】 Cassegrain telescope； obscuring ratio； Gaussian beam； defocusing distance；
- 【会议录名称】 全国第十三次光纤通信暨第十四届集成光学学术会议论文集
- 【会议名称】全国第十三次光纤通信暨第十四届集成光学学术会议
- 【会议时间】2007-11
- 【会议地点】中国江苏南京
- 【分类号】TN249
- 【主办单位】中国电子学学会、中国通信学会、中国光学学会、东南大学电工系