Vol. 2, issue 09, article # 8
pdf Banakh V. A., Smalikho I. N. Effect of turbulence on the thermal self-action of a laser beam in the atmosphere. // Atmospheric and oceanic optics. 1989. V. 2. No. 09. P. 790-797.Copy the reference to clipboard
Abstract:
A method for calculating the distribution of the average intensity of a partially coherent laser beam, propagating in a turbulent atmosphere under conditions of thermaL self-action, is developed based on an equation for the mutual coherence function of the wave field. Using the method developed it is shown that even small fluctuations of the wind velocity and refractive index strongly limit local self-focusing, which arises in the presence of nonlinear wind refraction. The computational data on the average beam intensity for the nonstationary state of thermal self-action, taking into account at the same time both the turbulent pulsations of the refractive index and fluctuations of the wind velocity, are presented for the first time.
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