Work

Propagation Properties of the COAM Matrix of Twisted Gaussian Schell-Model Beams in Non-Kolmogorov Turbulence

Year: 2025

Type: article

Abstract: Based on the extended Huygens–Fresnel principle and mode expansion theory, we derive the expression for the Coherence-Orbital Angular Momentum (COAM) matrix of twisted Gaussian Schell-model (TGSM) beams propagating through non-Kolmogorov turbulence. Using numerical simulations, we compare the evolution characteristics of the COAM matrix in free space and under non-Kolmogorov turbulence conditions. The study analyzes the variation patterns in the absolute values, real parts, and imaginary parts of the COAM matrix elements under different topological charges, and provides a detailed investigation of the influence of various beam parameters and turbulence parameters on these elements. The results show that by selecting appropriate parameters, the negative impact of turbulence on the correlation between orbital angular momentum (OAM) modes can be effectively mitigated. This work provides theoretical support for parameter selection and optimization in atmospheric optical communication systems.

Source: Photonics

DOI: 10.3390/photonics12121195

Authors: Jie Miao, Jing Wang, Xianmei Qian, Wenyue Zhu, Yongtao Zhang, Jinhong Li

Institutions: Taiyuan University of Science and Technology, Chinese Academy of Sciences, Anhui Institute of Optics and Fine Mechanics, Minnan Normal University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: National Natural Science Foundation of China