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Double exposure specklegrams obtained by using scaled aperture pupils

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Double exposure specklegrams obtained by using scaled aperture pupils SPIE_2001.pdf (231.0Kb)
Date
2001-08-14
Author(s)
Angel-Toro, Luciano
Tebaldi, Myrian
Trivi, Marcelo
Bolognini, Néstor
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Abstract
SPIE Proceedings Vol. 4419
Abstract
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 and after a diffuse in-plane displacement is done. The apertures have the same shape but its scale is modified between exposures. Note that the relative position of the aperture is maintained. In particular, we analyze a simple case that uses a circular aperture whose diameter is modified for recording each image. The intensity in the image plane and the fringe visibility are evaluated, in terms of the geometric characteristics of the pupils. © (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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URI
http://hdl.handle.net/10784/1421
Source / Editor URL
Proceedings/ 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications
DOI
10.1117/12.437233
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