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

Vista sencilla de ítem
dc.contributor.authorGómez-Tejada, Daniel
dc.contributor.authorSierra-Sosa, Daniel
dc.contributor.authorCastañeda, Román
dc.contributor.authorÁngel-Toro, Luciano
dc.contributor.departmentUniversidad EAFIT. Departamento de Ciencias Básicasspa
dc.contributor.researchgroupÓptica Aplicadaspa
dc.date.accessioned2014-03-26T21:23:43Z
dc.date.available2014-03-26T21:23:43Z
dc.date.issued2013-11-08
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) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.eng
dc.description.sponsorshipUniversidad EAFITspa
dc.identifier.citationDaniel Gomez-Tejada ; Daniel Sierra-Sosa ; Román Castañeda and Luciano Angel-Toro " Effect of the internal modulation of speckles in displacement measurements in optical vortex metrology ", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 87858C (November 18, 2013); doi:10.1117/12.2026469; http://dx.doi.org/10.1117/12.2026469spa
dc.identifier.isbn9780819496010
dc.identifier.urihttp://hdl.handle.net/10784/1430
dc.language.isoengeng
dc.publisherSPIE
dc.relation.ispartofProceedings of SPIE - 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications,eng
dc.relation.isversionofhttp://dx.doi.org/10.1117/12.2026469
dc.rights.accessrightsinfo:eu-repo/semantics/closedAccesseng
dc.rights.localAcceso cerradospa
dc.subject.keywordMetrologyeng
dc.subject.keywordModulationeng
dc.subject.keywordOptical vorticeseng
dc.subject.keywordSpeckleeng
dc.subject.keywordTransform theoryeng
dc.subject.keywordApertureseng
dc.subject.keywordSimulationseng
dc.subject.keywordOptical systemseng
dc.subject.keywordVortex-motioneng
dc.subject.keywordMensurationeng
dc.subject.lembMOVIMIENTO DE VÓRTICESspa
dc.subject.lembMEDICIÓNspa
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

Archivos

Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Effect of the modulation of speckles in displacement measurement in optical vortex metrology.pdf
Tamaño:
485.49 KB
Formato:
Adobe Portable Document Format
Descripción:
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.07 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar

Colecciones

Documentos de conferencia