Now showing items 1-10 of 71
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 ...
Speckle interferometric technique to assess soap films
(ELSEVIER SCIENCE BV, 2004-01-02)
An speckle interferometric technique to monitor the thinning process of vertical soap film before the film rupture is presented. The interferometric arrangement consists in a double aperture pupil optical system which ...
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
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
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 ...
Properties of speckle patterns generated through multiaperture pupils
(ELSEVIER SCIENCE BV, 2001-05-15)
The characteristics of the image speckles obtained through multiple aperture pupils are theoretically analyzed in terms of the parameters defining the pupils. The possibility of interpreting and synthesizing the image ...
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)