Multifractality of laser beam spatial intensity in a turbulent medium

被引：9

作者：

Barille, Regis ^{[1
]}

LaPenna, Paolo ^{[1
]}

机构：

[1] European Gravitat Obser, I-56021 Cascina, PI, Italy

来源：

APPLIED OPTICS | 2006年 / 45卷 / 14期

关键词：

D O I：

10.1364/AO.45.003331

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the results of a laser beam passing through a turbulent medium. First we measure the geometric parameters and the spatial coherence of the beam as a function of wind velocities. A multi-fractal detrended fluctuation analysis algorithm is applied to determine the multifractal scaling behavior of the intensity patterns. The measurements are fitted with models used in the analysis of river runoff records. We show the surprising result that the multifractality decreases when the spatial coherence of the laser is decreased. Universal scaling properties could be applied to the spatial characterization of a laser propagating in a turbulent medium or random medium. (c) 2006 Optical Society of America.

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页码：3331 / 3339

页数：9

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