Single-shot intensity-based measurement of high-order OAM in partially coherent vortex beams

IF 3.5 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2025-05-16 DOI:10.1016/j.optlaseng.2025.109085

Zhao Zhang , Yuanbo Wu , Xin Liu , Zhiwen Yan , Xinshun Zhao , Dong Xu , Greg Gbur , Bernhard J. Hoenders , Yangjian Cai , Jun Zeng

引用次数: 0

Abstract

Existing methods for measuring the orbital angular momentum (OAM) of partially coherent vortex beams face challenges like long collection times and intricate recovery algorithms, limiting them to low-order OAM and specific eigenmode beams. Here, we propose a single-shot intensity technique based on astigmatic phase modulation to measure OAM up to 30 in more general partially coherent vortex beams constructed from non-eigenmodes. This method transforms intensity into bright and dark fringes associated with OAM, accurately determining OAM magnitude and sign, even in turbulence. Our technique opens up a new route to high-speed and large-capacity optical communication.

查看原文本刊更多论文

部分相干涡旋光束中高阶OAM的单次强度测量

现有的测量部分相干涡旋光束轨道角动量（OAM）的方法面临采集时间长、恢复算法复杂等问题，局限于低阶轨道角动量和特定特征模光束。在这里，我们提出了一种基于像散相位调制的单次发射强度技术来测量非本征模构成的部分相干涡旋光束高达30的OAM。该方法将强度转换为与OAM相关的明暗条纹，即使在湍流中也能准确地确定OAM的大小和符号。该技术为实现高速大容量光通信开辟了一条新途径。

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

Optics and Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques