Effect of the log-amplitude covariance function on the statistics of speckle propagation through the turbulent atmosphere

Holmes, J. Fred; Lee, Myung Hun; Kerr, J. R.

doi:10.1364/josa.70.000355

Cited by 57 publications

(15 citation statements)

References 9 publications

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“…Under diverse daytime and weather conditions, geographical location, and altitude, its value varies typically from 10 −17 m −3/2 (weak turbulent fluctuations) to 10 −12 m −3/2 (strong fluctuations). 2 It is noteworthy that the phase approximation does not take into account amplitude fluctuations which mostly contribute in the regime of moderate turbulence [61]. For calculations in this regime, appropriate methods are the extended Huygens-Fresnel method [61] or the photon distribution function approach [42,43].…”

Section: Application To Atmospheric Channelsmentioning

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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Section: Application To Atmospheric Channelsmentioning

confidence: 99%

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

2018

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“…美国的Andrews等人 [8,9] 也利用ABCD传输矩阵对平面镜、角反射器等目标的激光回波二阶矩和四阶矩进行了较为系统的研究, 但这些研究都限于正入射和高斯孔径条件下. 广义惠更斯-菲涅尔原理也广泛用于湍流中的光传输与散射的研究, 但研究目标通常限于粗糙平面目标 [10] . 分步傅里叶算法广泛用于大气湍流中激光传输的模拟研究且不受目标形状的限制, 王利国 [11] 利用分步傅里叶算法模拟了大气湍流中角反射器的回波, 并对其二阶及四阶特性进行了研究.…”

Section: 引言unclassified

Study on the mean intensity from a cube corner reflector in atmospheric turbulence

Wang

2017

Sci. Sin.-Tech.

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Cube corner reflector is widely used as the cooperative target in laser tracking, location and other systems and its reflected intensity distribution is of great significance to the design of cooperative target as well as to the theoretical study on the performance of laser radar system. An analytic algorithm for calculating the reflected intensity in atmospheric turbulence is presented in this paper, in which the effective reflective area of corner reflector is approximately taken as an ellipse, and the reflected beam is decomposed of a series of complex Gaussian functions. All these, combined with the extended Huygens-Fresnel principle, derive the expression of the mean received intensity from the reflector. The effects of incident angle, off-axis distance of the reflector, propagation distance and the strength of turbulence on the shape, asymmetry, beam width and spreading of the reflected field are calculated and discussed. atmospheric turbulence, cube corner reflector, complex Gaussian function, extended Huygens-Fresnel principle, mean intensity

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“…Work on reflection field scattering character by other researchers has primarily been concentrated on the horizontal path [1][2][3][4][5]. There are many correlative researches [6][7][8][9][10][11][12][13] and application of turbulent model.…”

Section: Introductionmentioning

confidence: 99%