Selection of C<sup>2</sup><sub>n</sub>between Phase Screens for Simulating Laser Propagation Along an Inhomogeneous Turbulent Path

Xianmei, 钱仙妹 Qian; Wenyue, 朱文越 Zhu; Ruizhong, 饶瑞中 Rao

doi:10.3788/aos20082810.1856

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Numerical Simulation Of Turbulent Phase Screen1

Influence Of Phase Diffuser On Long-distance Fluctuations Of...1

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2023

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“…The basic idea of spectral inversion method is to generate a complex Gaussian random number matrix, and then filter it with the power spectrum function of atmospheric turbulence phase disturbance satisfying a certain model, and then get it by Fourier transform. This process is expressed as [12] :…”

Section: Numerical Simulation Of Turbulent Phase Screenmentioning

confidence: 99%

Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

康,

Lu,

唐

2023

First Advanced Imaging and Information Processing Conference (AIIP 2023)

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Section: Numerical Simulation Of Turbulent Phase Screenmentioning

confidence: 99%

Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

康,

Lu,

唐

2023

First Advanced Imaging and Information Processing Conference (AIIP 2023)

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“…The theoretical approach based on the equation ( 13) should be modified for atmospheric channels with a phase diffuser. Typically, the diffuser is used for partial randomization of the propagating field (see, for example, papers [21][22][23][24][25]). It is placed in front of the transmitter aperture and randomly varies the wavefront of the laser radiation.…”

Section: Influence Of Phase Diffuser On Long-distance Fluctuations Of...mentioning

confidence: 99%

Laser beam fluctuations for long distance propagation in the turbulent atmosphere

L.¹,

Chumak²,

Derzhypolska³

et al. 2022

Preprint

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The method of photon distribution function (PDF) is used to study fluctuations of light beams propagating through a turbulent atmosphere. Our analysis concerns the regime of saturated fluctuations. The focus is on the phenomena of beam wandering and the effect of partial coherence on photon density fluctuations. It is shown that the size of the quasiclassical part of wandering decreases with the propagation distance, while the quantum part increases. We explain this qualitative difference by beam fragmentation, which is accompanied by a loss of correlation between individual parts.The effect of the phase diffuser on the fourth moment (FM) of the irradiance is taken into account. The obtained explicit expression for the FM indicates the possibility of a significant reduction of noise in the communication channel. The diffuser changes the shot noise from delta-correlated (in the spatial domain) to smoothly distributed. The theory developed here is used to estimate the influence of the phase diffuser on light fluctuations.

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Selection of C²_nbetween Phase Screens for Simulating Laser Propagation Along an Inhomogeneous Turbulent Path

Cited by 2 publications

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Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

Laser beam fluctuations for long distance propagation in the turbulent atmosphere

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Selection of C2nbetween Phase Screens for Simulating Laser Propagation Along an Inhomogeneous Turbulent Path

Cited by 2 publications

References 0 publications

Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

Study on the propagation characteristics of coherent synthetic vortex beams in atmospheric turbulence

Laser beam fluctuations for long distance propagation in the turbulent atmosphere

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Selection of C²_nbetween Phase Screens for Simulating Laser Propagation Along an Inhomogeneous Turbulent Path