Statistical characteristics of spatial fluctuations in intensity of dispersed laser beams

V. I. Odintsov; O. M. Vokhnik

doi:10.1117/12.880927

7 February 2011 Statistical characteristics of spatial fluctuations in intensity of dispersed laser beams

V. I. Odintsov, O. M. Vokhnik

Proceedings Volume 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies; 799407 (2011) https://doi.org/10.1117/12.880927
Event: International Conference on Coherent and Nonlinear Optics (ICONO 2010) and International Conference on Lasers, Applications and Technologies (LAT 2010), 2010, Kazan, Russian Federation

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.

Citation Download 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 (7 February 2011); https://doi.org/10.1117/12.880927

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