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Updated: Feb 16, 2026

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    This summary is machine-generated.

    Researchers introduce partially coherent beams with optical vortices, which propagate without diffraction. These beams, formed by superposing Bessel modes, can be generated using liquid-crystal spatial light modulators.

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    Area of Science:

    • Optics and Photonics
    • Wave Phenomena

    Background:

    • Partially coherent beams are crucial in various optical applications.
    • Optical vortices, characterized by helical wavefronts, enable unique light manipulation.
    • Diffraction-free propagation is a desirable property for beam stability.

    Purpose of the Study:

    • To introduce a novel family of partially coherent beams carrying optical vortices.
    • To investigate the properties of these beams, particularly their diffraction-free propagation.
    • To demonstrate an experimental method for generating these beams.

    Main Methods:

    • Analytical derivation of beam properties.
    • Experimental generation using a computer-controlled liquid-crystal spatial light modulator.
    • Characterization of beam propagation and coherence properties.

    Main Results:

    • A new family of partially coherent beams with optical vortices was successfully introduced.
    • These beams exhibit diffraction-free propagation characteristics.
    • Approximate generation was achieved using a Fourier-transforming optical system.

    Conclusions:

    • The proposed partially coherent beams offer a unique combination of coherence and vortex properties.
    • The demonstrated generation method provides a practical approach for creating these specialized beams.
    • These beams hold potential for applications requiring stable, structured light propagation.