基于单压电变形镜的平顶光束整形研究
PDF下载 (252)徐卢浩,韩小帅,张 昕,姚 琪,马剑强.基于单压电变形镜的平顶光束整形研究[J].宁波大学学报(理工版),2021,34(6):74-78.DOI:
XU Luhao,HAN Xiaoshuai,ZHANG Xin,YAO Qi,MA Jianqiang.Flat-top beam shaping using unimorph deformable mirrors[J].Journal of Ningbo University(Natural Science & Engineering Edition),2021,34(6):74-78.DOI:
| Title: | Flat-top beam shaping using unimorph deformable mirrors |
| 作者: | 徐卢浩, 韩小帅, 张 昕, 姚 琪, 马剑强 |
| Author(s): | XU Luhao, HAN Xiaoshuai, ZHANG Xin, YAO Qi, MA Jianqiang |
| 关键词: | 自适应光学; 平顶光束; 单压电片变形镜; 光束整形 |
| Keywords: | adaptive optics; flat-top beam; unimorph deformable mirror; beam shaping |
| 分类号: | TH751 |
| 文献标识码: | A |
| 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、0.40mm)的圆形、方形平顶光束均有较好的整形效果. |
| Abstract: | 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, 0.40mm). |
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| 备注/Memo: | 收稿日期:2021-03-24.宁波大学学报（理工版）网址:http://journallg.nbu.edu.cn/ 基金项目: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）. 第一作者:徐卢浩（1995－）,男,浙江杭州人,在读硕士研究生,主要研究方向:光束整形.E-mail:743267491@qq.com *通信作者:马剑强（1983－）,男,浙江台州人,副教授,主要研究方向:压电器件与自适应光学.E-mail:majianqiang@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
