Intensity correlations in scattered vector vortex beams for determining the topological charge

IF 4.6 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-08-18 DOI:10.1016/j.rinp.2025.108398

Patnala Vanitha, Do-Kyeong Ko

引用次数: 0

Abstract

We propose a novel scheme for measuring the topological charge (TC) of the vector vortex beam (VVB) using polarization speckles size of the 2D auto-correlation function of scattered vector vortices. We have generated the non-separable state having singularities in both orbital angular momentum (OAM) and polarization. This non-separability is verified by measuring the degree of polarization (DOP) which can be calculated by using Stokes parameters. The Stokes parameters can be measured by observing the intensity distribution of the beam when projected onto different polarization states. The divergence of polarization speckle size of the auto-correlation function was measured as a function of topological charge of the vector vortex beams. These results can be used to generate a security key for data authentication and data encryption.

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用于确定拓扑电荷的散射矢量涡旋光束的强度相关性

提出了一种利用散射矢量涡旋二维自相关函数的偏振散斑大小测量矢量涡旋光束拓扑电荷的新方法。我们得到了在轨道角动量和偏振上都有奇点的不可分离态。这种不可分性通过测量偏振度（DOP）得到验证，偏振度可由斯托克斯参数计算得到。通过观察光束投射到不同偏振态时的强度分布，可以测量Stokes参数。测量了自相关函数偏振散斑大小随矢量涡旋光束拓扑电荷的变化。这些结果可用于生成用于数据身份验证和数据加密的安全密钥。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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