Propagation characteristics of asymmetric Schell-model beams through atmospheric turbulence

In this manuscript, we investigated the second-order statistics of an asymmetric Schell-model beam propagating in atmospheric turbulence with a non-Kolmogorov power spectrum. Numerical examples illustrate that lateral shifted beam patterns with both flattop and Airy-like distribution could be achieved by adjusting the phase function of complex degree of coherence (CDC). After propagating far enough from the source, such source coherence modulation on intensity shapes is suppressed by the medium fluctuations. However, the asymmetric beam profiles maintain for any propagation distances. What's more, the degree of coherence in the far fields depends not only on the strength of the turbulence, but also on the source coherence properties.

Automated summary

This study investigates the second-order statistics of an asymmetric Schell-model beam propagating in atmospheric turbulence with a non-Kolmogorov power spectrum. Numerical examples show that lateral shifted beam patterns can be achieved by adjusting the phase function of complex degree of coherence (CDC). The source coherence modulation on intensity shapes is suppressed by medium fluctuations in the far fields, while the asymmetric beam profiles are maintained for any propagation distances. The degree of coherence in the far fields depends not only on the strength of the turbulence, but also on the source coherence properties.