Effect of the internal modulation of speckles in displacement measurements in optical vortex metrology

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dc.contributor.authorGomez-Tejada, Daniel
dc.contributor.authorSierra-Sosa, Daniel
dc.contributor.authorCastaneda, Roman
dc.contributor.authorAngel-Toro, Luciano
dc.contributor.departmentUniversidad EAFIT. Departamento de Ciencias Básicasspa
dc.contributor.researchgroupÓptica Aplicadaspa
dc.date.accessioned2021-04-12T14:17:44Z
dc.date.available2021-04-12T14:17:44Z
dc.date.issued2013-01-01
dc.description.abstractThe Optical Vortex Metrology is based on the possibility of characterizing, through topological and morphological parameters, each one of the vortices existing in the phase of the optical field, or in a pseudo-phase obtained by means of the Hibert, Reisz or Laguerre-Gauss transforms. On this basis, it is possible tracking and pairing the homologous vortices. Then, the locations and relative displacements between the homologous vortices are determined with sub-pixel precision. Because of the statistical nature of the measurements, their quality is determined, among other factors, by the amount of available vortices per unit area. In this work, it is proposed to use the internal modulation of the speckles to generate a significant increase in the vortex density, which can be achieved by employing a double aperture pupil optical system. Simulations of the speckle distributions are presented to analyze the increase of the vortex density as a function of the distance between the apertures, and to evaluate the influence of the increment of this density in the quality of uniform in-plane displacements measurements. The results corresponding to modulated speckles are compared with those obtained with a single aperture. © 2013 SPIE.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1325
dc.identifier.doi10.1117/12.2026469
dc.identifier.issn0277786X
dc.identifier.issn1996756X
dc.identifier.otherWOS;000328616100121
dc.identifier.otherSCOPUS;2-s2.0-84891319898
dc.identifier.urihttp://hdl.handle.net/10784/27949
dc.language.isoengeng
dc.publisherSPIE-INT SOC OPTICAL ENGINEERING
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84891319898&doi=10.1117%2f12.2026469&partnerID=40&md5=e61cc024fd8d8815e189d39ba2ee98f7
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0277-786X
dc.sourceProceedings of SPIE
dc.subject.keywordDisplacementeng
dc.subject.keywordOptical vorticeseng
dc.subject.keywordPhase mapseng
dc.subject.keywordSpeckle modulationeng
dc.subject.keywordVortex densitieseng
dc.subject.keywordMeasurementseng
dc.subject.keywordModulationeng
dc.subject.keywordOptical systemseng
dc.subject.keywordOpticseng
dc.subject.keywordSpeckleeng
dc.subject.keywordUnits of measurementeng
dc.subject.keywordVortex floweng
dc.titleEffect of the internal modulation of speckles in displacement measurements in optical vortex metrologyeng
dc.typeinfo:eu-repo/semantics/conferencePapereng
dc.typeconferencePapereng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localDocumento de conferenciaspa

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