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Proceedings Paper

Double-exposure specklegrams obtained by using scaled aperture pupils
Author(s): Luciano Angel; Myrian C. Tebaldi; Marcelo Trivi; Nestor A. Bolognini
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Paper 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.

Paper Details

Date Published: 14 August 2001
PDF: 4 pages
Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); doi: 10.1117/12.437233
Show Author Affiliations
Luciano Angel, Univ. EAFIT (Colombia)
Myrian C. Tebaldi, Ctr. de Investigaciones Opticas and Univ. Nacional de La Plata (Argentina)
Marcelo Trivi, Ctr. de Investigaciones Opticas and Univ. Nacional de La Plata (Argentina)
Nestor A. Bolognini, Ctr. de Investigaciones Opticas and Univ. Nacional de La Plata (Argentina)


Published in SPIE Proceedings Vol. 4419:
4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications

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