用于大纵横比激光束变形折射整形系统的简化分析方法。

Simplified analytical method for an anamorphic refractive shaping system of laser beams with a large aspect ratio.

作者信息

Tan Qin-Wen, Guo Ya-Ding, Li Yang, Zhang Lin, Shao Chong-Feng, Cui Da-Fu, Peng Qin-Jun

出版信息

Appl Opt. 2021 Nov 1;60(31):9672-9680. doi: 10.1364/AO.438674.

Abstract

For reshaping aperture size and correcting low-order aberration of laser beams with large aspect ratios, a simplified analytical method is proposed to design an anamorphic refractive shaping system, which is composed of double-plane symmetric lenses. The simplified method enables performing a global study of aberrations via calculating the analytical primary wave aberration function under paraxial approximation. The aberration balance is analyzed with a three-lens laser collimating system and a compact four-lens laser expanding system. Lens bending and conic surfaces are introduced to decrease ray errors. Through the simplified analytical method, anamorphic refractive shaping systems for laser beams with large aspect ratios can be adequately analyzed and conveniently designed.

摘要

为了重塑孔径尺寸并校正大长宽比激光束的低阶像差，提出了一种简化的解析方法来设计由双平面对称透镜组成的变形折射整形系统。该简化方法能够通过计算傍轴近似下的解析初级波像差函数来对像差进行全局研究。利用三透镜激光准直系统和紧凑四透镜激光扩束系统分析了像差平衡。引入透镜弯曲和圆锥面以减少光线误差。通过该简化解析方法，可以对大长宽比激光束的变形折射整形系统进行充分分析并方便地设计。