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Based on the Huygens-Fresnel principle and the modified von Karman spectral model, a detailed numerical analysis of the pulse broadening of partially coherent Gaussian-Schell Model pulse (GSMP) beams propagating horizontally in atmospheric turbulence is conducted. An expression for the average light intensity of the GSMP beam in the frequency and time domains in atmospheric turbulence is derived, and an expression describing the pulse broadening associated with horizontal transmission in a turbulent atmosphere is derived. Moreover, an expression for the structure constant ( \(D_{12}\) ) in isotropic turbulent flow is obtained using the Markov approximation, and the pulse-broadening characteristics of partially coherent GSMP beams are discussed for different turbulent intensities.

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The Broadening of Pulsed Beams Traveling Horizontally in Atmospheric Turbulence

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  • 发表日期：

    2025年

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  • Xizheng Ke

摘要

Based on the Huygens-Fresnel principle and the modified von Karman spectral model, a detailed numerical analysis of the pulse broadening of partially coherent Gaussian-Schell Model pulse (GSMP) beams propagating horizontally in atmospheric turbulence is conducted. An expression for the average light intensity of the GSMP beam in the frequency and time domains in atmospheric turbulence is derived, and an expression describing the pulse broadening associated with horizontal transmission in a turbulent atmosphere is derived. Moreover, an expression for the structure constant ( \(D_{12}\) ) in isotropic turbulent flow is obtained using the Markov approximation, and the pulse-broadening characteristics of partially coherent GSMP beams are discussed for different turbulent intensities.