Extending low-coherence interferometry dynamic range using heterodyne detection

Low-coherence interferometry (LCI) technique is generating considerable interest in industrial applications where there is a need for larger measurements with high resolution. Conventional Fourier domain systems reach a limiting depth of around 3 mm, mainly due to the spectrometers used as detectors...

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Detalles Bibliográficos
Autores principales: Cusato, Leslie, Cerrotta, Santiago, Torga, Jorge, Morel, Eneas
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2020
Materias:
UTN
FRD
Low-coherence interferometry
Dynamic range
Heterodyne detection
Fourier transform spectroscopy
Optical coherence tomography
Acceso en línea:http://hdl.handle.net/20.500.12272/4485
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-4485
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic UTN
FRD
Low-coherence interferometry
Dynamic range
Heterodyne detection
Fourier transform spectroscopy
Optical coherence tomography
spellingShingle UTN
FRD
Low-coherence interferometry
Dynamic range
Heterodyne detection
Fourier transform spectroscopy
Optical coherence tomography
Cusato, Leslie
Cerrotta, Santiago
Torga, Jorge
Morel, Eneas
Extending low-coherence interferometry dynamic range using heterodyne detection
topic_facet UTN
FRD
Low-coherence interferometry
Dynamic range
Heterodyne detection
Fourier transform spectroscopy
Optical coherence tomography
description Low-coherence interferometry (LCI) technique is generating considerable interest in industrial applications where there is a need for larger measurements with high resolution. Conventional Fourier domain systems reach a limiting depth of around 3 mm, mainly due to the spectrometers used as detectors. In this work, we present an optical detection system that performs the Fourier transform of the LCI signals, based on a spatial heterodyne spectrometer. This device avoids the fall-off effect of the spectrometer, allowing to reach measurable optical depths of almost 5 cm without losing resolution. We describe the theory underlying this detection system and present experimental results which are in great accordance.
format Artículo
publishedVersion
author Cusato, Leslie
Cerrotta, Santiago
Torga, Jorge
Morel, Eneas
author_facet Cusato, Leslie
Cerrotta, Santiago
Torga, Jorge
Morel, Eneas
author_sort Cusato, Leslie
title Extending low-coherence interferometry dynamic range using heterodyne detection
title_short Extending low-coherence interferometry dynamic range using heterodyne detection
title_full Extending low-coherence interferometry dynamic range using heterodyne detection
title_fullStr Extending low-coherence interferometry dynamic range using heterodyne detection
title_full_unstemmed Extending low-coherence interferometry dynamic range using heterodyne detection
title_sort extending low-coherence interferometry dynamic range using heterodyne detection
publishDate 2020
url http://hdl.handle.net/20.500.12272/4485
work_keys_str_mv AT cusatoleslie extendinglowcoherenceinterferometrydynamicrangeusingheterodynedetection
AT cerrottasantiago extendinglowcoherenceinterferometrydynamicrangeusingheterodynedetection
AT torgajorge extendinglowcoherenceinterferometrydynamicrangeusingheterodynedetection
AT moreleneas extendinglowcoherenceinterferometrydynamicrangeusingheterodynedetection
bdutipo_str Repositorios
_version_ 1764820551861272577

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