Beam-intensity fluctuations in atmospheric turbulence

Leader, J. Carl

doi:10.1364/josa.71.000542

Cited by 26 publications

(5 citation statements)

References 22 publications

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“…Results for spatially coherent sources with finite spectral extent also appear in the literature [Fante, 1979;Baykal et al, 1981;Baykal and Plonus, 1982]. Leader [1981] studied the intensity fluctuations for a monochromatic secondary source which exhibits spatial partial coherence due to the height fluctuations of a rough surface. Recently, Fame [1981] derived the scintillations due to a temporally partially coherent and spatially incoherent source.…”

Section: Introductionmentioning

confidence: 89%

The scintillations for weak atmospheric turbulence using a partially coherent source

Baykal¹,

Plonus²,

Wang³

1983

Radio Science

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The scintillation index for weak atmospheric turbulence is formulated for a partially coherent source (in space and time). We obtain results for two cases when the detector has a slow and a fast response time. Our solutions correctly reduce to the known scintillation index in the limit of coherent and incoherent sources. Transmitter aperture averaging and frequency averaging effects are shown as special cases of our results. The limitations of the source model used and the solution obtained for a fast detector are discussed. (2r•cL) 2 ß

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Section: Introductionmentioning

confidence: 89%

The scintillations for weak atmospheric turbulence using a partially coherent source

Baykal¹,

Plonus²,

Wang³

1983

Radio Science

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“…It requires elaborate calculations of statistical parameters. The difficulty of this task grows essentially in the regime of moderate turbulence [40][41][42][43]. The given form of the elliptic-beam approximation assumes special statistics for the shape characteristics of the transmitted beam.…”

Section: Introductionmentioning

confidence: 99%

Theory of atmospheric quantum channels based on the law of total probability

2018

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The atmospheric turbulence is the main factor that influences quantum properties of propagating optical signals and may sufficiently degrade the performance of quantum communication protocols. The probability distribution of transmittance (PDT) for free-space channels is the main characteristics of the atmospheric links. Applying the law of total probability, we derive the PDT by separating the contributions from turbulence-induced beam wandering and beam-spot distortions. As a result, the obtained PDT varies from log-negative Weibull to truncated log-normal distributions depending on the channel characteristics. Moreover, we show that the method allows one to consistently describe beam tracking, a procedure which is typically used in practical long-distance free-space quantum communication. We analyze the security of decoy-state quantum key exchange through the turbulent atmosphere and show that beam tracking does not always improves quantum communication.

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“…Leader investigated the normalized intensity variance (a parameter to measure the strength of intensity fluctuation) of the optical beam which simulates laser reflectance from a rough surface with arbitrary height deviation in atmospheric turbulence [13]. Later, he extended his study to the intensity fluctuation of a partially coherent beam of arbitrary size and focus propagating through weak atmospheric turbulence [14]. In his study, the extended Rayleigh-Sommerfeld integral and the quadratic structure function (QSF) approximation for the fourth-order atmospheric spherical wave coherence function were applied.…”

Section: Introductionmentioning

confidence: 99%

PROPAGATION OF PARTIALLY COHERENT BEAM IN TURBULENT ATMOSPHERE: A REVIEW (Invited Review)

Wang¹,

Liu²,

Cai³

2015

PIER

171

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Partially coherent beam is preferred in many applications, such as free-space optical communications, remote sensing, active laser radar systems, etc., due to its resistance to the deleterious effects of atmospheric turbulence. In this paper, after presenting a historical overview on propagation of optical beams in turbulent atmosphere, we describe the basic theory for treating the propagation of optical beams in turbulent atmosphere and we mainly introduce recent theoretical and experimental developments on propagation of partially coherent beam in turbulent atmosphere. Recent progress on the interaction of a partially coherent beam with a semirough target in turbulent atmosphere and the corresponding inverse problem are also reviewed.

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Beam-intensity fluctuations in atmospheric turbulence

Cited by 26 publications

References 22 publications

The scintillations for weak atmospheric turbulence using a partially coherent source

The scintillations for weak atmospheric turbulence using a partially coherent source

Theory of atmospheric quantum channels based on the law of total probability

PROPAGATION OF PARTIALLY COHERENT BEAM IN TURBULENT ATMOSPHERE: A REVIEW (Invited Review)

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