强激光与粒子束2024，Vol.36Issue(6)：34-40,7.DOI:10.11884/HPLPB202436.240027
基于外差干涉的涡旋光水下传输相位测量
Phase measurement of vortex beam after underwater transmission based on heterodyne interference
摘要
Abstract
When a vortex beam propagates in a turbulent medium,the phase will be distorted by the influence of turbulent motion.In this paper,a point pixel phase extraction method based on heterodyne interference is proposed.By collecting the relative phase of each point's interference fringes in a period,the phase distribution of a vortex beam is reconstructed after its turbulent transmission under water.The random phase screen is generated by the power spectrum inversion method,and the transmission simulation of the vortex beams under different turbulence is completed.The result shows that the distortion increases with the increase of turbulence intensity.An experimental device was built to realize the phase measurement of vortex beams in underwater environments.The experimental results show that when a vortex beam is transmitted in turbulent water,its complex amplitude distribution undergoes a relatively complicated transmission process,and its intensity distribution and phase are distorted.The method proposed in this paper can accurately measure the complex phase distribution of a vortex beam and effectively identify its topological charges.关键词
涡旋光/水下湍流/外差干涉/随机相位屏/相位测量Key words
vortex beam/underwater turbulence/heterodyne interference/random phase screen/phase measurement分类
通用工业技术引用本文复制引用
罗鑫,陈强珅,袁晨源,朱启华,张航,冯国英..基于外差干涉的涡旋光水下传输相位测量[J].强激光与粒子束,2024,36(6):34-40,7.基金项目
国家重点研发计划项目(2022YFB3606304) （2022YFB3606304）
国家自然科学基金项目(U2230129) （U2230129）
