Buscar
Mostrando ítems 81-90 de 93
Preliminary study of a heterodyne detection system for optical coherence tomography signals
(2019-10-24)
A heterodyne detection system for optical coherence tomography signalsis presented and characterized. The system allows to expand the range of measurement and overcome the limitations of conventional systems which typically ...
Diseño y construcción de un módulo de microscopía de barrido por sondeo local y de un sistema de nanoposicionamiento de alta precisión para un microscopio multianálisis
(2014)
Este trabajo presenta la técncia de interferometrá de baja coherencia orientada a la obtención de topografiá de superficies y tomografía de materiales. Se decribe la idea general, se presentan distintos esquemas experimentales ...
Dual system increases the resolution of a low coherence interferometer system through a signal detector astigmatic focus
(2015-10-29)
La interferometría de baja coherencia en el espacio de Fourier (OCT-FD) es una técnica que permite medir distancia con valores típicos de rango dinámico en el orden de 3 mm y resolución por debajo de los 10 µm. En este ...
Dual system increases the resolution of a low coherence interferometer system through a signal detector astigmatic focus
(2015-10-29)
The low coherence interferometry in Fourier space (FD-OCT) is a technique to measure distance with
typical values of dynamic range in the order of 3 mm and resolution below 10 microns. In this paper
we propose to combine ...
Dynamic Detection of Thicknesses in Polymer Deformation Based on the Optical Coherence Interferometry Technique
(2015-07-31)
We describe the implementation of the optical coherence interferometry (OCT) technique in the dynamic
measurement of the deformation of polymers. The experimental set-up of the interferometer system and the signal processing ...
Interferometric system based on swept source-optical coherence tomography scheme applied to the measurement of distances of industrial interest
(2015-12-11)
We used an interferometric technique based on typical optical coherence tomography (OCT)
schemes for measuring distances of industrial interest. The system employed as a light source a tunable erbium-doped fiber laser of ...
Extensión del rango dinámico de la tomografía óptica coherente sensible a la fase
(RAFA - Santa Fé, 2019-10)
La tomografía óptica coherente sensible a la fase (PhS-OCT), también conocida como microscopía de fase (SDPM), es una técnica que se basa en la medición de la fase en la señal de interferencia obtenida por tomografía óptica ...
Large Axial Range Frequency-Domain Optical Low Coherence Interferometry
(2019-01-15)
In this paper, we propose a new experimental setup to extend the measurement range of frequency-domain low coherence interferometry (FD-LCI) from 3 mm to 2 cm. The FD-LCI can be extended to the technique of frequency domain ...
Improved spectral resolution in time-varying interferometry
(2018-11)
In this work, we present a procedure that allows increasing the resolution of dynamic length measurements made by spectral interferometry. The proposed scheme leads to obtaining a compact photonic instrument with the ability ...
Feasibility and analysis of a system of two in tandem interferometers for optical coherence tomography
(IEE Explore Digital Library, 2017-12-18)
A signal obtained from a combined system of two interferometers of low coherence in the frequency domain is presented and analyzed. This system allows to expand the range of measurement offered by the conventional optical ...