Light propagation through anisotropic turbulence

Toselli, Italo; Agrawal, Brij N.; Restaino, Sergio R.

doi:10.1364/josaa.28.000483

Cited by 133 publications

(62 citation statements)

References 25 publications

(31 reference statements)

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“…In this paper, we assume, as in [17,23], that the anisotropy of marine-atmospheric turbulence exists only along the z direction of propagation, and we consider that circular symmetry is maintained on the orthogonal plane to the propagation direction, thus we can neglect the vector properties of laser beams [23]. The non-Kolmogorov power spectrum of anisotropic marine-atmospheric turbulence can be given by the expression…”

Section: Non-kolmogorov Power Spectrum Of Anisotropic Marine-atmosphementioning

confidence: 99%

Wander and Spreading of Gaussian-Schell Model Beams Propagating Through Anisotropic Marine-Atmospheric Turbulence

Wu¹,

Zhang²,

Hu³

2016

PIER M

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Abstract-The effects of anisotropic turbulence on the wander and spreading of Gaussian-Schell model beams propagating in non-Kolmogorov marine-atmospheric channel are investigated. Expressions for beam wander and long-term beam spreading are derived in all conditions of marine-atmospheric turbulence. Our results indicate that the beam wander and spreading of Gaussian-Schell model beams are lower in the anisotropic turbulence than the beam in isotropic turbulence. This model can be evaluated ship-to-ship/shore optical laser communication system performance.

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Section: Non-kolmogorov Power Spectrum Of Anisotropic Marine-atmosphementioning

confidence: 99%

Wander and Spreading of Gaussian-Schell Model Beams Propagating Through Anisotropic Marine-Atmospheric Turbulence

Wu¹,

Zhang²,

Hu³

2016

PIER M

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“…In first approximation the turbulence is assumed stationary, isotropic, homogeneous, and characterized by the Kolmogorov model in the inertial range [6]. Anisotropic effects have been inspected theoretically [7] but are generally ignored in standard simulations. The turbulence strength is characterized by the Fried parameter r 0 .…”

Section: Introductionmentioning

confidence: 99%

Simulation of Atmospheric Wave-Fronts with Turbulence Intermittency

Sedmak¹

2014

IJAA

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A new extendable method for the simulation of atmospheric wave-fronts with turbulence intermittency is reported. The purpose is to generate simulations consistent with the distributions observed for the turbulence parameters and the seeing, not available with standard methods. The intermittency is included by entering log-normal distributed arrays for the Fried parameter and the spatial coherence outer scale length into an extended form of the phase spectrum. The method is tested on large samples of simulated long-exposure point-source images. The tests show the agreement of the simulations with literature data. The simulations show that the intermittency affects negligibly the long-term median image size but breaks the symmetry of the wave-front phase spectrum, scatters the phase structure function and changes the image profile.

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“…However, refractive index fluctuations caused by a turbulent atmosphere significantly limit the transmission of optical signals. As a general extension of Kolmogorov turbulence, non-Kolmogorov turbulence has been studied widely both in theory and in experiment in the past decades [29][30][31][32][33][34][35][36][37] . It is verified that random beams are found as a suitable way for reducing the disadvantages induced by a turbulent atmosphere [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] .…”

mentioning

confidence: 99%

“…ρ 0 is the spatial coherence width of the spherical wave in turbulence under the second quadratic approximation. In this Letter, we employ the non-Kolmogrov spectrum, which is [30] …”

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confidence: 99%

Vector properties of a tunable random electromagnetic beam in non-Kolmogrov turbulence

Wang

Zhu

2016

中国光学快报

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Analytical formulas for a class of tunable random electromagnetic beams propagating in a turbulent atmosphere through a complex optical system are derived with the help of a tensor method. One finds that the far field intensity distribution is tunable by modulating the source correlation structure function. The on-axis spectral degree of polarization monotonically increases to the same value for different values of order M in free space while it returns to the initial value after propagating a sufficient distance in turbulence. Furthermore, it is revealed that the state of polarization is closely determined by the initial correlation structure rather than by the turbulence parameters.OCIS It is well known the spatial correlation structure of random beams significantly affects the propagation intensity distribution [1] . However, only a few correlation function models such as the Schell-model source, Bessel-correlated source, and the Lambertian source have been introduced over the past decades [1][2][3] . As a typical correlation source, the Schell-model source with a Gaussian correlation function has been extensively studied both in theory and in experiments over the past decades [4][5][6][7][8][9] . Since Gori proposed a sufficient condition for the generation of genuine correlation functions based on a non-negative definiteness [10] , a variety of correlation functions have been proposed, both theoretically and experimentally. Beams generated by non-uniform correlation sources have found various unique properties in terms of self-accelerating, selffocusing and special beam profiles in terms of dark hollow, flat-topped and rectangular frame, etc. [11][12][13][14][15][16][17][18][19] . Coherence and polarization are two fundamentals of light fields both in classical and quantum optics. They had been studied separately in literature until James first reported that the spectral degree of polarization (DOP) generally changes on propagation induced by the source correlation property, even in free space [20] . Since Wolf developed a unified theory of coherence and polarization for random electromagnetic beams, it is widely used to determine the statistical properties of random electromagnetic beams in free space as well as in various media [21][22][23][24][25][26][27][28] . Optical communication exhibits various advantages in terms of high speed, high bandwidth, and anti-interference as compared with microwave communication. However, refractive index fluctuations caused by a turbulent atmosphere significantly limit the transmission of optical signals. As a general extension of Kolmogorov turbulence, non-Kolmogorov turbulence has been studied widely both in theory and in experiment in the past decades [29][30][31][32][33][34][35][36][37] . It is verified that random beams are found as a suitable way for reducing the disadvantages induced by a turbulent atmosphere [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] . Recently, random electromagnetic beams have been reported as a better optimization of scalar r...

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Light propagation through anisotropic turbulence

Cited by 133 publications

References 25 publications

Wander and Spreading of Gaussian-Schell Model Beams Propagating Through Anisotropic Marine-Atmospheric Turbulence

Wander and Spreading of Gaussian-Schell Model Beams Propagating Through Anisotropic Marine-Atmospheric Turbulence

Simulation of Atmospheric Wave-Fronts with Turbulence Intermittency

Vector properties of a tunable random electromagnetic beam in non-Kolmogrov turbulence

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