文献类型：期刊文献

中文题名：分数阶涡旋光在不同流速水环境中的传输特性研究

英文题名：Research on the Transmission of Vortex Beams in Water Flows of Different Velocities

作者：种华[1];马景新[1];李本旭[1];谭明波[1];朱江转[1];许飞[1];祁义红[1]

机构：[1]华东理工大学物理学院,上海200237

年份：2025

卷号：38

期号：6

起止页码：39

中文期刊名：大学物理实验

外文期刊名：Physical Experiment of College

基金：华东理工大学“实践教学体系优化与内容更新”类项目(校教〔2024〕14号);教育部产学合作协同育人项目(231003117080507);华东理工大学大学生创新项目(X202310251263);华东理工大学研究生课程思政示范课程项目。

语种：中文

中文关键词：光通信;涡旋光;轨道角动量;叉形光栅

外文关键词：optical communication;vortex light;orbital angular momentum;fork shaped grating

摘要：携带轨道角动量模式的涡旋光束为光通信和光学信息处理等提供了新的复用维度。为拓展涡旋光束的进一步应用,不同环境和复杂条件下涡旋光束的传输特性引起了广泛的研究兴趣。本文通过实验室搭建光路,研究了不同流速水中携带整数和分数轨道角动量的涡旋光束传输特性。实验中利用空间光调制器模拟叉形光栅的方法产生了不同轨道角动量的涡旋光,通过电机控制产生不同流速的水体环境,研究了涡旋光通过该水环境后的涡旋光场分布,并测量了其轨道角动量。结果表明,在不同水流环境下,涡旋光光场分布仅有因折射率改变导致的轻微扰动,而其所携带的轨道角动量信息保持不变。本文研究工作可为涡旋光在不同水环境中的传输、测量和应用提供一定的参考。
The vortex beam carrying orbital angular momentum mode provides a new multiplexing dimension for optical communication and optical information processing.To further expand the application of vortex beams,the transmission characteristics of vortex beams under different environments and complex conditions have attracted widespread research interest.This article investigates the transmission characteristics of vortex beams carrying integer and fractional orbital angular momentum in water at different flow rates by constructing an optical path in a laboratory.In the experiment,a space light modulator was used to simulate a cross shaped grating to generate vortex light with different orbital angular momentum.The vortex light was generated in a water environment with different flow velocities through motor control.The distribution of vortex light field after passing through the water environment was studied,and its orbital angular momentum was measured.The results indicate that under different water flow environments,the distribution of the vortex optical field is only slightly disturbed due to changes in refractive index,while the orbital angular momentum information carried by it remains unchanged.This research work can provide some reference for the transmission,measurement,and application of vortex light in different water environments.