中国光学（中英文）2023，Vol.16Issue(6)：1365-1375,11.DOI:10.37188/CO.2023-0045
产生环形激光的光学系统设计
Design of an optical system for generating ring-shaped laser beam
摘要
Abstract
We present a method for designing a transmissive-reflective combined optical system to generate a focused ring-shaped laser beam.The design aims to achieve a freely adjustable radius for the focused ring-shaped laser beam and ensure uniform beam intensity even after defocusing.Based on the principle of equal energy splitting,the transmissive system establishes mapping functions for the input and output light projec-tion height.It optimizes the lens parameters to shape the incident Gaussian light into a flat-topped circular shape,thus achieving uniformity of beam intensity.On the other hand,the reflective system uses the ad-justable diameter range of the focal plane ring-shaped light and working distance parameters.By applying the principle of geometric ray tracing,it calculates the parameters of the conical reflecting mirror,parabolic cyl-indrical mirror,and dynamic mirror,then the flat-topped circular light is transformed into a ring-shaped light.The experimental results show that when the half-apex angle of the dynamic mirror is 16°,the designed sys-tem can achieve a freely adjustable radius for the focused ring-shaped laser beam from 15 mm to 30 mm with a size error not more than 0.05 mm,and the intensity uniformity after defocusing reaches 84％.The design method can achieve both uniformity of intensity and freedom of size adjustment without replacing the sys-tem lens.It has good operability and yields higher precision and efficiency in the processing of ring-shaped light.关键词
光学系统/环形激光/半径调控/离焦均匀Key words
optical system/ring-shaped laser/radius control/defocus uniformity分类
数理科学引用本文复制引用
陈宝华,吴泉英,唐运海,范君柳,陈晓翌,余浩墨,孙毅..产生环形激光的光学系统设计[J].中国光学（中英文）,2023,16(6):1365-1375,11.基金项目
国家自然科学基金资助项目(No.62275187,No.61875145,No.11804243) （No.62275187,No.61875145,No.11804243）
江苏省十四五光学工程重点学科项目资助(No.2021135) （No.2021135）
苏州市产业前瞻与关键核心技术项目资助(No.SYC2022145) （No.SYC2022145）
苏州市重点实验室(No.SZS201202)Supported by National Natural Science Foundation of China(No.62275187,No.61875145,No.11804243) （No.SZS201202）
The Jiangsu Key Disciplines of the Fourteenth Five-Year Plan(No.2021135) （No.2021135）
Suzhou Industrial Outlook and Key Core Technology Project(No.SYC2022145) （No.SYC2022145）
Suzhou Key Laboratory(No.SZS201202) （No.SZS201202）
