Multifractality of laser beam spatial intensity in a turbulent medium
Applied Optics, Vol. 45, Issue 14, pp. 3331-3339 (2006)
http://dx.doi.org/10.1364/AO.45.003331
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Abstract
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 multifractal 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.
© 2006 Optical Society of America
OCIS Codes
(010.3920) Atmospheric and oceanic optics : Meteorology
(030.1670) Coherence and statistical optics : Coherent optical effects
(030.7060) Coherence and statistical optics : Turbulence
(290.1310) Scattering : Atmospheric scattering
History
Original Manuscript: March 7, 2005
Revised Manuscript: December 9, 2005
Manuscript Accepted: February 11, 2006
Citation
Régis Barille and Paolo LaPenna, "Multifractality of laser beam spatial intensity in a turbulent medium," Appl. Opt. 45, 3331-3339 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-14-3331
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