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Experimental study of turbulence-induced beam wander and deformation of a partially coherent beam
Optics Letters, 2014We carry out an experimental study of the effect of spatial coherence on the beam wander and the deformation of a Gaussian Schell-model (GSM) beam propagating through thermally induced turbulence. It is demonstrated that a GSM beam with lower coherence indeed experiences smaller beam wander and deformation than that with higher coherence.
Xianlong, Liu +3 more
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Beam wander of partially coherent array beams through non-Kolmogorov turbulence
Optics Letters, 2015Based on the theory of second moments and non-Kolmogorov spectrum, the beam wander theory is extend to non-Kolmogorov turbulence, the general analytical expression of beam wander in non-Kolmogorov turbulence is derived. Beam wander depends on the non-Kolmogorov turbulence parameters and the initial second moments of the laser beam at the input plane ...
Yongping, Huang +3 more
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Beam wander of electromagnetic Gaussian–Schell model beams propagating in atmospheric turbulence
Applied Optics, 2012The general model of beam wander for a coherent Gaussian beam propagating through atmospheric turbulence is extended to the case of a partially polarized electromagnetic Gaussian-Schell model (EGSM) beam. The expression of the beam wander is obtained by characterizing the EGSM beam with the effective beam parameters.
Song, Yu +5 more
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Gaussian-beam wander characteristic of horizon propagation
2011 IEEE International Conference on Microwave Technology & Computational Electromagnetics, 2011A model of the modified Rytov method is derived based on the wander in the original theory, this method takes into account the outer scale and the impact of multiple scattering on the wander, wander formula for certain improvements, and more with the experimental data. Analysis all kinds of factors of the wander variance.
Lingli Wang, Yiping Han, Ruping Xue
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Scintillation analysis for multiple uplink Gaussian beams in the presence of beam wander
SPIE Proceedings, 2014For a beam from ground to space, the main optical turbulence effects are scintillation and beam wander. Multiple incoherent beams can reduce the scintillation. The scintillation is determined by the number of the beams, the beam separation and the size of the beam wander variance. A wave optics simulation was applied to study the scintillation index of
Wu-ming Wu +4 more
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Gaussian beam scintillation on ground-to-space paths: the importance of beam wander
SPIE Proceedings, 2004Predictions of scintillation for ground to space collimated Gaussian beams generated from a numerical wave optics simulation are compared with recent weak scintillation theory developed from the Rytov perturbation approach (L.C. Andrews, R.L. Phillips, P.T. Yu, Ap Opt 34 , p 7742-7751, 1995; J.D.
Gary J. Baker, Robert S. Benson
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Fluctuations of intensity caused by laser beam wandering
Soviet Journal of Quantum Electronics, 1977A derivation is given of an approximate expression for the density distribution of the radiation power passing through a specified aperture which is illuminated by a laser beam subject to random displacements. The expression provides a good approximation to the exact distribution plotted graphically by means of a table of Q functions if the dimensions ...
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Effects of anisotropic turbulence on the long term beam spread and beam wander of Gaussian beam
Optik, 2018Abstract Experiments and theoretical investigations have shown that the isotropic turbulence is not the only possible turbulence in the atmosphere. Researches about the anisotropic non-Kolmogorov have attracted more and more attentions recently.
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Power scintillations due to the wandering of the laser beam
Proceedings of the IEEE, 1967The wandering of the laser beam causes a fading effect at the receiving terminal. A simple model is discussed to investigate the probability distribution of the power intercepted by a circular aperture.
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