| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 3, 2008
|
|
|---|---|---|
| Article Number | 08028 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.2971/jeos.2008.08028 | |
| Published online | 25 August 2008 | |
Regular papers
Study of a circular Gaussian transition in an optical speckle field
1
Onera Centre de Toulouse, Département d’Optique Théorique et Appliquée, 2 avenue Edouard Belin, BP 74025, 31055 Toulouse cedex 4, France
2
Laboratoire de Spectrométrie Physique (UMR 5588), Université Joseph Fourier de Grenoble, BP87, 38402 St-Martin d’Heres Cedex, France
Received:
20
May
2008
We propose a numerical approach to study optical speckle fields generated by various conditions of surface roughness and illumination, without any a priori assumption concerning the properties of the scattered field. By overcoming the limitations imposed by the use of the central limit theorem, we perform the study of the whole circular Gaussian transition undergone by the speckle field when varying the surface roughness and the size of the laser illumination. We focus our attention on the speckle contrast, the degree of circularity and the degree of asymmetry, including their radial dependence.
Key words: circular Gaussian transition / random rough Gaussian surfaces / speckle / circularity / asymmetry
© The Author(s) 2008. All rights reserved.
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