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Proceedings Article

Statistical characteristics of spatial fluctuations in intensity of dispersed laser beams

[+] Author Affiliations
V. I. Odintsov, O. M. Vokhnik

M.V. Lomonosov Moscow State Univ. (Russian Federation)

Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 799407 (February 07, 2011); doi:10.1117/12.880927
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From Conference Volume 7994

  • LAT 2010: International Conference on Lasers, Applications, and Technologies
  • Vladislav Panchenko; Gérard Mourou; Aleksei M. Zheltikov
  • Kazan, Russian Federation | August 23, 2010

abstract

The statistical characteristics of spatial fluctuations of the intensity of dispersed laser beams are studied theoretically. The density of the probability distribution for the intensity is found and its transformation with a change in the longitudinal coordinate is studied. It is shown that a decrease in the intensity fluctuations and a drop in the contrast of the beam speckle structure occur with increasing distance from the initial plane in which the spatially inhomogeneous broadband field is assumed to be spatially coherent. A decrease in fluctuations is accompanied by an increase in the size of speckles in the direction of dispersion, as well as along the beam axis. An interpretation of the found regularities is given.

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Citation

V. I. Odintsov and O. M. Vokhnik
"Statistical characteristics of spatial fluctuations in intensity of dispersed laser beams", Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 799407 (February 07, 2011); doi:10.1117/12.880927; http://dx.doi.org/10.1117/12.880927


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