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Tunable azimuthally non-uniform orbital angular momentum carried by vector optical fields [Early Posting]

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摘要

Orbital angular momentum (OAM), as a fundamental parameter of photon, has attracted great attention in recent years. Although various properties and applications have been developed by modulating the OAM of photons, there is rare research about the non-uniform OAM. We propose and generate a new kind of continuously tunable azimuthally non-uniform OAM for the first time, which is carried by hybridly polarized vector optical field with cylindrically symmetric intensity profile and a complex polarization singularity. We also present the perfect vector optical field carrying non-uniform OAM with fixed radius independent of topological charges, which can propagate steadily without radial separation, solving the problem of the unsteady propagation due to the broaden OAM spectrum of the non-uniform OAM. This new kind of tunable non-uniform OAM with cylindrical symmetric intensity profile, complex polarization singularity and propagation stability enriches the family of OAM, and can be widely used in many regions such as optical manipulation, quantum optics, optical communications and so on.

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作者单位:

    Qufu Normal University
    Qufu Normal University
    Nankai University
    Nanjing University

引用该论文

Pan Yue,Gao Xu-Zhen,Ma Rende,Tu Chenghou,Li Yongnan,Wang Huitian. Tunable azimuthally non-uniform orbital angular momentum carried by vector optical fields[J].Chinese Optics Letters,2020,18(12):12.