Reduction of measurement errors in OCT scanning

Optical coherence tomography (OCT) is a non-destructive optical technique, which uses a light source with a wide band width that focuses on a point in the sample to determine the distance (strictly, the optical path difference, OPD) between this point and a reference surface. The point can be superf...

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Autores principales: Sallese, Marcelo, Morel, Eneas, Tabla, Pablo, Torga, Jorge
Formato: Documento de conferencia publishedVersion
Lenguaje:Inglés
Publicado: Spie Digital Library 2020
Materias:
Optical coherence tomography
Interferometers
Acceso en línea:http://hdl.handle.net/20.500.12272/4266
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-4266
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Optical coherence tomography
Interferometers
spellingShingle Optical coherence tomography
Interferometers
Sallese, Marcelo
Morel, Eneas
Tabla, Pablo
Torga, Jorge
Reduction of measurement errors in OCT scanning
topic_facet Optical coherence tomography
Interferometers
description Optical coherence tomography (OCT) is a non-destructive optical technique, which uses a light source with a wide band width that focuses on a point in the sample to determine the distance (strictly, the optical path difference, OPD) between this point and a reference surface. The point can be superficial or at an interior interface of the sample (transparent or semitransparent), allowing topographies and / or tomographies in different materials. The Michelson interferometer is the traditional experimental scheme for this technique, in which a beam of light is divided into two arms, one the reference and the other the sample. The overlap of reflected light in the sample and in the reference generates an interference signal that gives us information about the OPD between arms. In this work, we work on the experimental configuration in which the reference signal and the reflected signal in the sample travel on the same arm, improving the quality of the interference signal. Among the most important aspects of this improvement we can mention that the noise and errors produced by the relative reference–sample movement and by the dispersion of the refractive index are considerably reduced. It is thus possible to obtain 3D images of surfaces with a spatial resolution in the order of microns. Results obtained on the topography of metallic surfaces, glass and inks printed on paper are presented.
format Documento de conferencia
publishedVersion
author Sallese, Marcelo
Morel, Eneas
Tabla, Pablo
Torga, Jorge
author_facet Sallese, Marcelo
Morel, Eneas
Tabla, Pablo
Torga, Jorge
author_sort Sallese, Marcelo
title Reduction of measurement errors in OCT scanning
title_short Reduction of measurement errors in OCT scanning
title_full Reduction of measurement errors in OCT scanning
title_fullStr Reduction of measurement errors in OCT scanning
title_full_unstemmed Reduction of measurement errors in OCT scanning
title_sort reduction of measurement errors in oct scanning
publisher Spie Digital Library
publishDate 2020
url http://hdl.handle.net/20.500.12272/4266
work_keys_str_mv AT sallesemarcelo reductionofmeasurementerrorsinoctscanning
AT moreleneas reductionofmeasurementerrorsinoctscanning
AT tablapablo reductionofmeasurementerrorsinoctscanning
AT torgajorge reductionofmeasurementerrorsinoctscanning
bdutipo_str Repositorios
_version_ 1764820551561379844

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