Correlation function of the intensity fluctuations of a Gaussian optical beam in a random medium containing largescale discrete scatterers

1981 ◽  
Vol 24 (3) ◽  
pp. 218-224
Author(s):  
V. A. Krutikov
Keyword(s):  
Correlation Function ◽  
Random Medium ◽  
Optical Beam ◽  
Intensity Fluctuations

scholarly journals A method of generating a random optical field using the Karhunen-Loeve expansion to simulate atmospheric turbulence

2020 ◽  
Vol 44 (1) ◽  
pp. 53-59
Author(s):  
S.N. Khonina ◽  
S.G. Volotovskiy ◽  
M.S. Kirilenko
Keyword(s):  
Numerical Simulation ◽  
Correlation Function ◽  
Atmospheric Turbulence ◽  
Random Environment ◽  
Random Medium ◽  
Optical Field ◽  
Phase Singularity ◽  
Vortex Beams ◽  
Simulation Results ◽  
Random Field Generation

It is proposed to use the random field generation in the numerical simulation of the propagation of radiation through a random medium using method based on the Karhunen–Loeve expansion with various types of correlation operators to describe turbulence simulators. The properties of the calculated simulators of a random medium with a Gaussian correlation function were investigated in modeling the propagation of Laguerre-Gaussian vortex beams. The simulation results showed that an increase in the order of the optical vortex leads, as in the experiment, to lower stability of the phase singularity of the beams to random optical fluctuations. The similarity of the simulation results and the optical experiments indicates the promise of the proposed approach for the synthesis of random environment simulators.

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