19 November 2015 Numerical investigation of energy density fluctuation of pulsed Laguerre-Gaussian beams
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Proceedings Volume 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics; 968012 (2015) https://doi.org/10.1117/12.2205303
Event: XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2015, Tomsk, Russian Federation
Abstract
The propagation of broadband femtosecond pulsed Laguerre-Gaussian beams in a turbulent atmosphere was studied. Based on the numerical solution of the parabolic wave equation for the complex spectral amplitude of the wave field by splitting method into physical factors relative variance and correlation function of the energy density fluctuations of the pulsed optical radiation were analyzed. It has been shown that with increasing optical turbulence the curves of the standard deviation of short pulse beams are reduced compared with the standard deviation of intensity fluctuations of continuous-wave radiation. The spatial structure of fluctuations of the energy density for the high-order modes Laguerre- Gaussian beam with a decrease of the pulse duration becomes more large-scale.
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V. A. Banakh, V. A. Banakh, L. O. Gerasimova, L. O. Gerasimova, I. N. Smalikho, I. N. Smalikho, A. V. Falits, A. V. Falits, } "Numerical investigation of energy density fluctuation of pulsed Laguerre-Gaussian beams", Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968012 (19 November 2015); doi: 10.1117/12.2205303; https://doi.org/10.1117/12.2205303
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