Affiliation:
1. Hassan First University of Settat, École Nationale des Sciences Appliquées LISA Berrechid 26100 Morocco
2. Laboratory LPNAMME, Laser Physics Group, Departments of Physics, Faculty of Sciences Chouaïb Doukkali University P. B 20 El Jadida 24000 Morocco
3. Interdisciplinary Centre for Security, Reliability and Trust (SnT) University of Luxembourg Luxembourg City 1855 Luxembourg
Abstract
AbstractThis work investigates the joint effects of jet engine exhaust‐induced turbulence and atmospheric turbulence on the propagation of a partially coherent Gaussian Schell‐model Array (GSMA) vortex beam. Using the two‐process propagation method, analytical formulae are derived for the cross‐spectral density, spectral density, degree of coherence, and beam width of the considered beam. The results show that the considered beam takes different shapes; when the spatial coherence is large, the spectral density of the GSMA vortex beam takes an elliptical shape, whereas when the spatial coherence is smaller, the spectral density remains a Gaussian shape. The evolution profile of the degree of coherence weakens gradually when the propagation distance, topological charge, and turbulence strength increase. Moreover, the profile of the degree of coherence takes the Gaussian profile when the propagation distance is longer or turbulence atmospheric is stronger. Furthermore, the results reveal that the corresponding beam spreads faster with a larger propagation distance, lower spatial coherence, and high‐strength turbulence. This study also concludes from the results that the beam is affected more when its propagation is near the jet engine exhaust, which means that this latter has a significant impact.
Subject
General Physics and Astronomy
Cited by
1 articles.
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