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Proceedings Paper

Numerical holography computing by using the fractional Fourier transform: a ping-pong-pang algorithm
Author(s): R. Torres; Pierre Pellat-Finet; Yezid M. Torres Moreno
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Paper Abstract

An iterative algorithm for computing holograms is presented: it is based on the fractional order Fourier transform. It allows us to generate diffraction patterns which are not in the Fourier plane. It also makes possible the design of computer generated holograms providing two beforehand given illumination patterns on two preselected planes. Holograms have been calculated according to the proposed method and have been engraved by photolithography. Experimental results are given. A speckle reduction technique is also explained.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591747
Show Author Affiliations
R. Torres, Univ. Industrial de Santander (Colombia)
Pierre Pellat-Finet, Univ. de Bretagne Sud (France)
Ecole Nationale Superieure des Telecommunications de Bretagne (France)
Yezid M. Torres Moreno, Univ. Industrial de Santander (Colombia)


Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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