Evolution of two correlation edge dislocations carried by partially coherent beams in oceanic turbulence

IF 0.7 4区物理与天体物理 Q4 OPTICS

Journal of Russian Laser Research Pub Date : 2025-02-12 DOI:10.1007/s10946-024-10225-2

Haitao Chen, Qiang Li, Zenghui Gao, Yang Xiang

{"title":"Evolution of two correlation edge dislocations carried by partially coherent beams in oceanic turbulence","authors":"Haitao Chen, Qiang Li, Zenghui Gao, Yang Xiang","doi":"10.1007/s10946-024-10225-2","DOIUrl":null,"url":null,"abstract":"<div><p>Besides the correlation vortices, the correlation edge dislocation of partially coherent beams is shown to be in existence. The analytical expression of the cross-spectral density (CSD) for the Gaussian Schell-model (GSM) beams with two correlation edge dislocations propagating through oceanic turbulence is derived, which is used to study the interaction of them in free space and oceanic turbulence. It is shown that the correlation edge dislocations are generally unstable and easy to vanish, while correlation vortices or correlation edge dislocation may appear with propagation. The interaction is influenced by the propagation distance and parameters, such as the spatial correlation length, the off-axis distances, and the slope of the edge dislocations. Besides, the oceanic turbulence parameters affect the appearance, position and number of correlation singularities in the fields. The stronger oceanic turbulence, the faster the decrease of the distance for the first reappearance of the correlation vortices.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 4","pages":"377 - 387"},"PeriodicalIF":0.7000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Russian Laser Research","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10946-024-10225-2","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OPTICS","Score":null,"Total":0}

引用次数: 0

Abstract

Besides the correlation vortices, the correlation edge dislocation of partially coherent beams is shown to be in existence. The analytical expression of the cross-spectral density (CSD) for the Gaussian Schell-model (GSM) beams with two correlation edge dislocations propagating through oceanic turbulence is derived, which is used to study the interaction of them in free space and oceanic turbulence. It is shown that the correlation edge dislocations are generally unstable and easy to vanish, while correlation vortices or correlation edge dislocation may appear with propagation. The interaction is influenced by the propagation distance and parameters, such as the spatial correlation length, the off-axis distances, and the slope of the edge dislocations. Besides, the oceanic turbulence parameters affect the appearance, position and number of correlation singularities in the fields. The stronger oceanic turbulence, the faster the decrease of the distance for the first reappearance of the correlation vortices.

查看原文本刊更多论文

海洋湍流中部分相干光束携带的两个相关边缘位错的演化

除了相关涡外，部分相干光束的相关边缘位错也存在。导出了具有两个相关边缘位错的高斯-谢尔模型（GSM）光束在海洋湍流中传播的交叉谱密度（CSD）的解析表达式，用于研究它们在自由空间和海洋湍流中的相互作用。研究表明，相关边位错通常是不稳定的，容易消失，而相关涡或相关边位错在传播过程中可能出现。相互作用受传播距离和参数的影响，如空间相关长度、离轴距离和边缘位错的斜率。此外，海洋湍流参数对场中相关奇点的出现、位置和数量也有影响。海洋湍流越强，相关涡首次重现的距离减小越快。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Russian Laser Research 物理-光学

CiteScore

1.50

自引率

22.20%

发文量

审稿时长

2 months

期刊介绍： The journal publishes original, high-quality articles that follow new developments in all areas of laser research, including: laser physics; laser interaction with matter; properties of laser beams; laser thermonuclear fusion; laser chemistry; quantum and nonlinear optics; optoelectronics; solid state, gas, liquid, chemical, and semiconductor lasers.