Quantitative Determination of Periodic Size Variations in an Object via Phase Singularity Tracking in CGH

Authors

  • Astrid Lorena Villamizar Amado Centro de Investigaciones Ópticas (CONICET La Plata-CIC-UNLP), La Plata, Argentina b Departamento de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata, Argentina https://orcid.org/0000-0002-2124-7702
  • Alejandro Velez Zea Grupo de Óptica y Fotónica, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia https://orcid.org/0000-0001-7525-9541
  • Myrian Tebaldi Centro de Investigaciones Ópticas (CONICET La Plata-CIC-UNLP), La Plata, Argentina b Departamento de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata, Argentina https://orcid.org/0000-0003-4592-5819

DOI:

https://doi.org/10.24054/bistua.v23i1.4032

Keywords:

Laguerre-Gauss transform; Optical vortices; Computer generated holographic.

Abstract

In this work we demonstrate that it is possible to determine the size changes of an object from the tracking of optical vortices contained in the pseudophase information of computer generated holographic (CGH) videos, without the need for holographic reconstruction. To validate the proposal, holographic videos of a 3D object with periodic changes in size generated using a layer-based method with random phase. Two random phase approaches are tested to simulate the surface of a diffuse object during hologram generation. Next, homologous vortices are determined in the pseudophase information obtained by using the Laguerre-Gauss transform. The use of this transform allows precise control of the number of optical vortices to be tracked. The structural properties of the vortex cores are used to identified and to track the singularities and to determine the periodic variation of the object size along the frames of the holographic video.

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Additional Files

Published

2025-06-18 — Updated on 2025-06-20

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How to Cite

Villamizar Amado, A. L., Velez Zea, A., & Tebaldi, M. (2025). Quantitative Determination of Periodic Size Variations in an Object via Phase Singularity Tracking in CGH. BISTUA REVISTA DE LA FACULTAD DE CIENCIAS BASICAS, 23(1), 1–8. https://doi.org/10.24054/bistua.v23i1.4032 (Original work published June 18, 2025)

Issue

Vol. 23 No. 1 (2025)

Section

Paper

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Copyright (c) 2025 © Autores; Licencia Universidad de Pamplona

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© Autores; Licencia Universidad de Pamplona

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