Account of an optical beam spreading caused by turbulence for the problem of partially coherent wavefield propagation through inhomogeneous absorbing media

2003 ◽  
Author(s):  
Vadim V. Dudorov ◽  
Valerii V. Kolosov
Keyword(s):  
Optical Beam ◽  
Beam Spreading ◽  
Partially Coherent ◽  
Absorbing Media

Critical power for self-focusing of optical beam in absorbing media

Laser Physics ◽  
2018 ◽  
Vol 28 (4) ◽  
pp. 045407
Author(s):  
Pengfei Qi ◽  
Lin Zhang ◽  
Lie Lin ◽  
Nan Zhang ◽  
Yan Wang ◽  
...  
Keyword(s):  
Critical Power ◽  
Optical Beam ◽  
Self Focusing ◽  
Absorbing Media

Beam Spreading of Partially Coherent Beams Propagating through Turbulence Atmospheric in Boundary Layer

2011 ◽  
Vol 317-319 ◽  
pp. 1862-1867 ◽  
Author(s):  
Ming Gao ◽  
Hong Lv
Keyword(s):  
Boundary Layer ◽  
Atmospheric Boundary Layer ◽  
Spectral Density Function ◽  
Coherent Beam ◽  
Long Distance ◽  
Beam Spreading ◽  
Partially Coherent ◽  
Boundary Layer Turbulence ◽  
Coherent Beams ◽  
Analysis Of Variation

The cross-spectral density function of the partially coherent beam on 1.06μm is extended based on the generalized Huygens-Fresnel principle by using the Gaussian Schell-mode(GSM) and the modified Frehlich spectrum. And on the analysis of variation of the beam spreading radius w with the initial emission radius w0, zenith angle θ and propagating distance z, the intensity distribution and beam spreading of GSM beam through atmospheric boundary layer turbulence are obtained under different distance. The results show that the beam spreading can be reduced at long distance for the suitable w0 according to the inflexion value of the curve. As well as, simulation results demonstrate that the modified Frehlich spectrum and the modified von Karman spectrum have little difference on the beam spreading for partially coherent beam propagating in atmospheric boundary layer turbulence.

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