摘要
针对光束整形问题,本文提出了一个基于单压电变形镜的方法和相关的搜索算法,用于整形出不同形状和不同尺寸的平顶光束.利用随机并行梯度下降算法找到平顶光束整形所需的调制相位,控制变形镜重构光斑对应的调制相位,实现对不同形状、不同尺寸平顶光束的整形.结果表明:所生成的圆形、方形平顶光束质量较高,且对不同尺寸(0.25、0.30、0.35、0.40 mm)的圆形、方形平顶光束均有较好的整形效果.
For beam shaping problem,a unimorph deformable mirror method and a search algorithm are proposed to realize the shaping of flat-top beams in different shapes and sizes.The random parallel gradient descent algorithm is used to find the modulation phase required for flat-top beam shaping,and the deformable mirror is further controlled to reconstruct the corresponding modulation phase of the spot,which realizes the shaping of flat-top beams of different shapes and sizes.The experimental results show that the generated round and square flat-top beams are of high quality and have good shaping effects on round and square flat-top beams of different sizes(0.25,0.30,0.35,0.40 mm).
作者
徐卢浩
韩小帅
张昕
姚琪
马剑强
XU Luhao;HAN Xiaoshuai;ZHANG Xin;YAO Qi;MA Jianqiang(Faculty of Mechanical Engineering&Mechanics,Ningbo University,Ningbo 315211,China)
出处
《宁波大学学报（理工版）》
CAS
2021年第6期74-78,共5页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
国家自然科学基金(51805280)
浙江省省属高校基本科研业务费专项资金(SJLY2020002).
