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Mostrando ítems 1-10 de 135
Obtención de estructuras de relieve en materiales de registro de haluros de plata
(Sociedad Española de Óptica, 2013-01)
Diffraction transmission gratings were recorded in AGFA-8E75 film, chemically treated under processes with D-19 + potassium ferrocyanide and a chemical processing technique proposed for PE-2 film to obtain embossed stripes. ...
Speckle photography with different pupils in a multiple-exposure scheme
(Optical Society of America, 2000-01-01)
The use of different multiple-aperture pupils for recording each image in speckle photography is proposed -- The introduction of suitable spatial frequency carriers, by internally modulating imaged speckles, allows one to ...
Noise and bias in optical coherence tomography intensity signal decorrelation
(OPTICAL SOC AMER, 2020-04-15)
Functional optical coherence tomography (OCT) imaging based on the decorrelation of the intensity signal has been used extensively in angiography and is finding use in flowmetry and therapy monitoring. In this work, we ...
In-plane displacement measurement in vortex metrology
(2013-10-09)
Recently we proposed an alternative method of displacement analysis in vortex metrology, based on the application of the Fourier optics techniques, that is suitable for an intermediate range of displacement measurements ...
Optical processing by fringed speckles registered in a BSO crystal
(SPIE, 2000-07-28)
An alternative image multiplexing technique, employing a multiple-aperture pupil for each exposure, is presented. The aperture arrangement of the pupil is modified between exposures. A thick photorefractive BSO crystal is ...
Mejoramiento del desempeño de un sistema de comunicaciones ópticas FFH-OCDMA utilizando redes de bragg apodizadas fuertes
(Sociedad Colombiana de Física, 2006-04-01)
Vortex Metrology by using Fourier Analysis Techniques: Vortex Networks Correlation Fringes
(OPTICAL SOC AMER, 2012-10-01)
Recuperación de la energía radiada por conductores de corriente alterna
(Sociedad Colombiana de Física, 2001-06-01)
Vortex metrology using Fourier analysis techniques: vortex networks correlation fringes.
(OPTICAL SOC AMER, 2012-10-20)
In this work, we introduce an alternative method of analysis in vortex metrology based on the application of the Fourier optics techniques. The first part of the procedure is conducted as is usual in vortex metrology for ...
Three-dimensional surface contouring of macroscopic objects by means of phase-difference images
(OPTICAL SOC AMER, 2006-09-01)
We report a technique to determine the 3D contour of objects with dimensions of at least 4 orders of magnitude larger than the illumination optical wavelength. Our proposal is based on the numerical reconstruction of the ...
