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Density of turbulence-induced phase dislocations

机译：湍流引起的位错密度

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摘要

Under certain conditions, light-wave propagation through turbulent media causes a specific type of phase distortion: so-called phase dislocations. A salient feature of phase dislocations is an appearance of zones where the phase turns out to be a multivalued function of coordinates. The problem of turbulence-induced phase dislocations is considered. Both a theoretical treatment and simulations based on the numerical solution of a parabolic equation are used for estimation of the dislocation density. Various turbulence conditions, ranging from weak to very strong ones, are considered as well as the dependences on wavelength, and the inner scales of turbulence are presented. An empirical formula for the dislocation density suitable for a wide range of turbulent and propagation conditions is derived. The results obtained can be useful for both atmospheric and adaptive optics. (C) 1998 Optical Society of America. [References: 29]
机译：在某些条件下，光波通过湍流介质传播会引起一种特定类型的相位畸变：所谓的位错。相错位的一个显着特征是出现相区是坐标的多值函数的区域。考虑了湍流引起的位错的问题。基于抛物线方程数值解的理论处理和模拟都用于估算位错密度。考虑了从弱到强的各种湍流条件，以及对波长的依赖性，并给出了湍流的内部尺度。推导了适用于各种湍流和传播条件的位错密度的经验公式。获得的结果对于大气和自适应光学都可能有用。 （C）1998年美国眼镜学会。 [参考：29]

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