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  11. Evolution Of The Polarization State And Oam-resolved Polarization Of Full Poincaré Beams Propagating In The Atmosphere

Evolution of the polarization state and OAM-resolved polarization of full Poincaré beams propagating in the atmosphere

Yakun Wang, Lin Liu, Yahong Chen

    Optics Express
    |June 14, 2025

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    View abstract on PubMed

    Summary
    This summary is machine-generated.

    Full Poincaré beams (FPBs) maintain their polarization structure in atmospheric turbulence, rotating predictably. This study reveals selection rules for orbital angular momentum (OAM) modes, explaining diverse polarization evolution.

    Area of Science:

    • Optics and Photonics
    • Quantum Information Science
    • Atmospheric Physics

    Background:

    • Full Poincaré beams (FPBs) exhibit complex polarization properties.
    • Atmospheric turbulence significantly affects light propagation.
    • Understanding polarization dynamics is crucial for optical communication and sensing.

    Purpose of the Study:

    • To investigate the polarization characteristics of FPBs in atmospheric turbulence.
    • To formulate analytical solutions for the cross-spectral density and COAM matrices.
    • To analyze the impact of turbulence on OAM-resolved polarization parameters.

    Main Methods:

    • Theoretical formulation of cross-spectral density and COAM matrices.
    • Analysis of polarization state, degree of polarization, and OAM-resolved parameters.

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  • Application of OAM mode analysis to identify correlation selection rules.

    • Main Results:

    • FPBs maintain their stereographic projection on the Poincaré sphere in turbulence, with a turbulence-independent rotation angle.
    • A selection rule governing correlations between OAM modes in turbulent FPBs is identified.
    • OAM-resolved Stokes parameters and degree of polarization show varied evolution patterns due to turbulence.

    Conclusions:

    • The study provides a theoretical framework for understanding FPB polarization in turbulence.
    • Identified selection rules offer insights into light-matter interactions in turbulent media.
    • Findings are relevant for designing robust optical systems operating in atmospheric conditions.