Li Yajun
Appl Opt. 2011 Feb 10;50(5):679-86. doi: 10.1364/AO.50.000679.
Nonparaxial ray tracing is performed to investigate the field scanned out by a single beam through two rotatable thick prisms with different parameters, and a general solution is obtained and then expanded into a power series to establish the third-order theory for Risley prisms that paves the way to investigate topics of interest such as optical distortions in the scan pattern and an analytical solution of the inverse problem of a Risley-prism-based laser beam steering system; i.e., the problem is concerned with how to direct a laser beam to any specified direction within the angular range of the system.
通过非傍轴光线追迹来研究单束光通过两个具有不同参数的可旋转厚棱镜所扫描出的视场，得到了一个通解，然后将其展开为幂级数，以建立里斯利棱镜的三阶理论，这为研究诸如扫描图案中的光学畸变以及基于里斯利棱镜的激光束转向系统逆问题的解析解等感兴趣的课题铺平了道路；也就是说，该问题涉及如何在系统的角度范围内将激光束引导至任何指定方向。
