Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering

Optical coherence tomography (OCT) is one of the most advanced optical measurement techniques for complex structure visualization. The advantages of OCT have been used for surface and subsurface defect detection in composite materials, polymers, ceramics, non-metallic protective coatings, and many m...

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Main Authors: C?rdenas Mu?oz, Juan Fernando, Cadenbach, Spyros Thomas, Paz Rojas, Jos? Luis
Format: Artículos
Language:eng
Published: 2017
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Online Access:http://repositorio.educacionsuperior.gob.ec/handle/28000/4034
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spelling oai:localhost:28000-40342017-11-01T17:33:19Z Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering C?rdenas Mu?oz, Juan Fernando Cadenbach, Spyros Thomas Paz Rojas, Jos? Luis STRUCTURE MESOSCOPIC CHARACTERIZATION LASER ABLATED CARBON NANOPARTICLES Optical coherence tomography (OCT) is one of the most advanced optical measurement techniques for complex structure visualization. The advantages of OCT have been used for surface and subsurface defect detection in composite materials, polymers, ceramics, non-metallic protective coatings, and many more. Our research activity has been focused on timefrequency spectroscopic analysis in OCT. It is based on time resolved spectral analysis of the backscattered optical signal delivered by the OCT. The time-frequency method gives spectral characteristic of optical radiation backscattered or backreflected from the particular points inside the tested device. This provides more information about the sample, which are useful for further analysis. Nowadays, the applications of spectroscopic analysis for composite layers characterization or tissue recognition have been reported. During our studies we have found new applications of spectroscopic analysis. We have used this method for thickness estimation of thin films, which are under the resolution of OCT. Also, we have combined the spectroscopic analysis with polarization sensitive OCT (PS-OCT). This approach enables to obtain a multiorder retardation value directly and may become a breakthrough in PS-OCT measurements of highly birefringent media. In this work, we present the time-frequency spectroscopic algorithms and their applications for OCT. Also, the theoretical simulations and measurement validation of this method are shown. http://spie.org/Publications/Proceedings/Paper/10.1117/12.2231116 2017-04-12T18:53:34Z 2017-04-12T18:53:34Z 2016 article C?rdenas, J. et al. (2016). Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering. Proceedings of SPIE - The International Society for Optical Engineering. Estados Unidos 0277786X http://repositorio.educacionsuperior.gob.ec/handle/28000/4034 eng DOI;10.1117/12.2231116 closedAccess http://creativecommons.org/licenses/by-nc-sa/3.0/ec/
institution SENESCYT
collection Repositorio SENESCYT
biblioteca Biblioteca Senescyt
language eng
format Artículos
topic STRUCTURE
MESOSCOPIC CHARACTERIZATION
LASER ABLATED
CARBON NANOPARTICLES
spellingShingle STRUCTURE
MESOSCOPIC CHARACTERIZATION
LASER ABLATED
CARBON NANOPARTICLES
C?rdenas Mu?oz, Juan Fernando
Cadenbach, Spyros Thomas
Paz Rojas, Jos? Luis
Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
description Optical coherence tomography (OCT) is one of the most advanced optical measurement techniques for complex structure visualization. The advantages of OCT have been used for surface and subsurface defect detection in composite materials, polymers, ceramics, non-metallic protective coatings, and many more. Our research activity has been focused on timefrequency spectroscopic analysis in OCT. It is based on time resolved spectral analysis of the backscattered optical signal delivered by the OCT. The time-frequency method gives spectral characteristic of optical radiation backscattered or backreflected from the particular points inside the tested device. This provides more information about the sample, which are useful for further analysis. Nowadays, the applications of spectroscopic analysis for composite layers characterization or tissue recognition have been reported. During our studies we have found new applications of spectroscopic analysis. We have used this method for thickness estimation of thin films, which are under the resolution of OCT. Also, we have combined the spectroscopic analysis with polarization sensitive OCT (PS-OCT). This approach enables to obtain a multiorder retardation value directly and may become a breakthrough in PS-OCT measurements of highly birefringent media. In this work, we present the time-frequency spectroscopic algorithms and their applications for OCT. Also, the theoretical simulations and measurement validation of this method are shown.
author C?rdenas Mu?oz, Juan Fernando
Cadenbach, Spyros Thomas
Paz Rojas, Jos? Luis
author_facet C?rdenas Mu?oz, Juan Fernando
Cadenbach, Spyros Thomas
Paz Rojas, Jos? Luis
author_sort C?rdenas Mu?oz, Juan Fernando
title Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
title_short Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
title_full Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
title_fullStr Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
title_full_unstemmed Structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by Raman scattering
title_sort structure and mesoscopic characterization of laser ablated carbon nanoparticles in water by raman scattering
publishDate 2017
url http://repositorio.educacionsuperior.gob.ec/handle/28000/4034
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score 11,871979