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Proceedings Paper

Correlation properties of three-dimensional superposed fractal speckle distributions
Author(s): Takashi Okamoto; Takuya Moriyama; Shuhei Fujita
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Paper Abstract

The statistical properties of three-dimensional fractal speckle fields produced by three speckle waves crossed orthogonally are studied theoretically. The analytical expressions are derived for the intensity correlation of the superposed speckle fields, and the theoretical results are verified by means of computer simulations. It is shown that the spatial anisotropy of intensity distributions, which exists in each speckle field, remains even when three speckle waves are interfered with one another. The spatial anisotropy affects the power law distribution of intensity correlations for fractal speckle fields, and leads to speckle patterns that are not self-similar in two or three dimensions. As an application of the superposed speckle field, we propose a method to fabricate a disordered medium by illuminating photopolymer with multiple laser speckle waves.

Paper Details

Date Published: 15 September 2006
PDF: 6 pages
Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 634102 (15 September 2006); doi: 10.1117/12.695252
Show Author Affiliations
Takashi Okamoto, Kyushu Institute of Technology (Japan)
Takuya Moriyama, Kyushu Institute of Technology (Japan)
Shuhei Fujita, Kyushu Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 6341:
Speckle06: Speckles, From Grains to Flowers
Pierre Slangen; Christine Cerruti, Editor(s)

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