Convergence of general beams into Gaussian intensity profiles after propagation in turbulent atmosphere

Average Intensity and Spreading of Partially Coherent Four-Petal Gaussian Beams in Turbulent Atmosphere

“…Phenomenons shown in Figs. 1-4 of our paper correspond well to the final conclusions of [10] that a general shaped laser beam will eventually approach to a Gaussian average intensity profile after it propagates in turbulent atmosphere. Furthermore, our results additionally demonstrate that, for the PCFPG beam propagating in atmosphere, the transformation of the intensity profile becomes much more rapidly when the coherence length δ g decreases (see Fig.…”

Propagation properties of partially coherent Hermite–cosh-Gaussian beams through atmospheric turbulence

“…Then, a sine intensity profile appears, which becomes a profile with central dip (e.g., the minimum average intensity at the centre is equal to a half of the maximum average intensity) as the propagation distance gradually increases. Furthermore, a flattopped intensity profile occurs and finally evolves into a Gaussian profile, when the propagation distance is sufficiently long [26]. In addition, a comparison of Fig.…”

“…(26) describes the effect of turbulence and increases with z 16/5 . (26) reduces to the mean squared width of partially coherent HG beams in atmospheric turbulence…”

“…One is the free-space diffraction described by the first two terms C 1 /C 0 and C 2 z 2 /C 0 in Eq. (26), and the other is the atmospheric turbulence described by the third term C 3 z 16/5 . Eqs.…”

Flat-top beam profile generated using a fiber-bundle prism-coupled beam shaper

“…For instance, a report by Ref. [16] explains the convergence of general beams into Gaussian intensity profiles after propagation in the turbulent atmosphere.…”