Some physical insights into beam propagation in strong turbulence


  • Ronald L. Fante


In this paper we examine some of the physical implications of using the extended Huygens-Fresnel principle to calculate laser beam properties in strong turbulence. We shall demonstrate the roles played by the log-amplitude and phase fluctuations and will show that quadratic phase structure functions lead to results incompatible with experimental data. We shall also prove that the Huygens-Fresnel principle automatically predicts a normalized irradiance variance of unity and Gaussian field statistics in strong turbulence provided that certain conditions on the turbulence strength and spectrum are satisfied.