光学精密工程2013，Vol.21Issue(6)：1373-1379,7.DOI:10.3788/OPE.20132106.1373
旋转双棱镜光束指向解析解
Analytic solution of optical beam steering based on rotational double prisms
摘要
Abstract
The relation between the prisms' orientations and the corresponding pointing positions of an outgoing beam should be figured out when a beam steering mechanism was used to steer the direction of optical beam.Therefore,this paper explored the beam steering mechanism of a rotational doubleprism pointing system by applying first-order paraxial approximation method and nonparaxial ray tracing method.Then,it calculated the analytic formulae of the pointing position for the outgoing beam based on the prisms' rotational angles.The results obtained with the two methods were compared and validated by designed beam steering experiments of rotational double prisms.The results show that the nonparaxial ray tracing method can describe accurately the beam steering mechanism,while the results obtained with the conventional first-order paraxial approximation method has a difference from the experiment value.The larger the beam's angular deviation is,the more obvious the difference between the solutions with first-order paraxial approximation method and the corresponding experiment values is.When the difference of the prisms' rotational angles is 90°,the difference between the solutions of azimuth with first-order paraxial approximation method and the corresponding experiment values becomes a maximum one.It suggests that the nonparaxial ray tracing method is suitable for discussing the beam steering mechanism for the rotating double-prism beam steering system with a large angular deviation.关键词
光通信/光束指向/旋转双棱镜/一级近轴近似/非近轴光线追迹Key words
optical communication/beam steering/rotational double prisms/first-order paraxial approximation/nonparaxial ray tracing分类
数理科学引用本文复制引用
周远,鲁亚飞,黑沫,熊飞湍,李凯,范大鹏..旋转双棱镜光束指向解析解[J].光学精密工程,2013,21(6):1373-1379,7.基金项目
国家自然科学基金资助项目(No.51135009) （No.51135009）
湖南省教育厅科学研究基金资助项目(No.12C0473) （No.12C0473）
湖南省自然科学基金资助项目(No.13JJ3122) （No.13JJ3122）
