华东师范大学学报（自然科学版）Issue(3)：51-60,10.DOI:10.3969/j.issn.1000-5641.2025.03.007
大气湍流下高分辨率高带宽分数涡旋光束的探测
Detection of high-resolution high-bandwidth fractional vortex beams under atmospheric turbulence
摘要
Abstract
In this study,a high-resolution fractional hybrid vortex beam is proposed.The hybrid scaling parameter n used to generate the fractional hybrid vortex beam provides new degrees of freedom,extending the bandwidth of orbital angular momentum.The convolutional neural network from deep learning was adopted to accurately recognize the fractional hybrid vortex beam with an orbital angular momentum resolution ∆l of 0.1 and hybrid scaling parameter resolution ∆n of 0.01 under atmospheric turbulence conditions.The study investigated the effects of turbulence intensity and transmission distance on recognition accuracy.The results indicate that at a transmission distance of 150 m,the recognition accuracy reaches 82.09%,even under strong turbulence(C2n=5×10-14 m-2/3).The recognition accuracy exceeded 99%under the conditions of medium and weak turbulence(C2n=1×10-14 m-2/3 and 5×10-15 m-2/3,respectively).This scheme provides a reference for the accurate identification of fractional orbital angular momentum in turbulent environments.关键词
涡旋光束/分数轨道角动量/大气湍流/深度学习Key words
vortex beam/fractional orbital angular momentum/atmospheric turbulence/deep learning分类
物理学引用本文复制引用
曹鹭萍,夏勇..大气湍流下高分辨率高带宽分数涡旋光束的探测[J].华东师范大学学报（自然科学版）,2025,(3):51-60,10.基金项目
国家自然科学基金(12174115) （12174115）
