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Phase-object detection by use of double-exposure fringe-modulated speckle patterns
(OSA, 2003-01)
We study the properties of a double-exposure image specklegram of a diffuse object obtained by use of a doubleaperture pupil. A phase object is placed in front of one aperture during the first or the second exposure. Also, ...
New multiple aperture arrangements for speckle photography
(Elsevier B.V, 2000-08-01)
Abstract. We propose a multiple exposure specklegram by using an optical system whose multiple aperture pupil changes between exposures. In particular, we analyze experimentally two arrangements and we show that it is ...
Double exposure specklegrams obtained by using scaled aperture pupils
(SPIE, 2001-08-14)
In speckle photography the pupil aperture is usually not modified between exposures. In our work, the change of the pupil aperture scale between exposures is analyzed on the basis of double-exposed image speckle, before ...
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 ...
