Article (Scientific journals)
Propagation Characteristics of a Partially Coherent Gaussian Schell-model Array Vortex Beam in the Joint Turbulence Effect of a Jet Engine and Atmosphere
Nabil, Hassan; Balhamri, Adil; Bayraktar, Mert et al.
2023In Annalen der Physik
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Keywords :
atmospheric turbulence; directed infrared countermeasures; jet engine exhaust; partially coherent Gaussian Schell model array vortex beams
Abstract :
[en] This 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.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications
Disciplines :
Electrical & electronics engineering
Author, co-author :
Nabil, Hassan;  Hassan First University of Settat > Ecole Nationale des Sciences Appliquées
Balhamri, Adil;  Hassan First University of Settat > École Nationale des Sciences Appliquées
Bayraktar, Mert ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Belafhal, Abdelmajid;  Chouaïb Doukkali University
External co-authors :
yes
Language :
English
Title :
Propagation Characteristics of a Partially Coherent Gaussian Schell-model Array Vortex Beam in the Joint Turbulence Effect of a Jet Engine and Atmosphere
Alternative titles :
[en] Propagation Characteristics of a Partially Coherent Gaussian Schell-model Array Vortex Beam in the Joint Turbulence Effect of a Jet Engine and Atmosphere
Publication date :
20 September 2023
Journal title :
Annalen der Physik
ISSN :
1521-3889
Publisher :
Wiley - VCH Verlag GmbH & Co. KG, Weinheim, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Security, Reliability and Trust
Available on ORBilu :
since 20 September 2023

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