| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 5, 2010
|
|
|---|---|---|
| Article Number | 10052 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.2971/jeos.2010.10052 | |
| Published online | 23 September 2010 | |
Regular papers
A Gaussian transition of an optical speckle field studied by the minimal spanning tree method
1
ONERA, Theoretical and Applied Optics Department, 91120 Palaiseau, France
2
ONERA, Theoretical and Applied Optics Department, 31055 Toulouse, France
Received:
23
July
2010
We propose to study the Gaussian transition of an optical speckle field using the Minimal Spanning Tree method. We perform an analysis of the spatial intensity distribution and show that the maxima of intensity evolve from a cluster distribution in the strongly non Gaussian regime, to a gradient distribution around the transition and then approach the random distribution area when we tend to the Gaussian regime. In the generated minimal spanning trees, we observe that the standard deviation of the edges length exhibits a maximum around the Gaussian transition when about 4 correlation cells of the surface roughness are illuminated.
Key words: speckle / surface roughness / Gaussian transition / minimal spanning tree / statistical optics
© The Author(s) 2010. All rights reserved.
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