Intensity correlations in scattered vector vortex beams for determining the topological charge
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)...
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Elsevier
2025-09-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137972500292X |
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| author | Patnala Vanitha Do-Kyeong Ko |
| author_facet | Patnala Vanitha Do-Kyeong Ko |
| author_sort | Patnala Vanitha |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c309ced45dd34de4aa3ce73d449c9e76 |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-c309ced45dd34de4aa3ce73d449c9e762025-08-20T05:06:26ZengElsevierResults in Physics2211-37972025-09-017610839810.1016/j.rinp.2025.108398Intensity correlations in scattered vector vortex beams for determining the topological chargePatnala Vanitha0Do-Kyeong Ko1Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaCorresponding author.; Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaWe 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.http://www.sciencedirect.com/science/article/pii/S221137972500292XVector vortex beamsAuto-correlation functionScatteringSpecklesTopological charge |
| spellingShingle | Patnala Vanitha Do-Kyeong Ko Intensity correlations in scattered vector vortex beams for determining the topological charge Results in Physics Vector vortex beams Auto-correlation function Scattering Speckles Topological charge |
| title | Intensity correlations in scattered vector vortex beams for determining the topological charge |
| title_full | Intensity correlations in scattered vector vortex beams for determining the topological charge |
| title_fullStr | Intensity correlations in scattered vector vortex beams for determining the topological charge |
| title_full_unstemmed | Intensity correlations in scattered vector vortex beams for determining the topological charge |
| title_short | Intensity correlations in scattered vector vortex beams for determining the topological charge |
| title_sort | intensity correlations in scattered vector vortex beams for determining the topological charge |
| topic | Vector vortex beams Auto-correlation function Scattering Speckles Topological charge |
| url | http://www.sciencedirect.com/science/article/pii/S221137972500292X |
| work_keys_str_mv | AT patnalavanitha intensitycorrelationsinscatteredvectorvortexbeamsfordeterminingthetopologicalcharge AT dokyeongko intensitycorrelationsinscatteredvectorvortexbeamsfordeterminingthetopologicalcharge |