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Tailoring an arbitrary large vectorial structured light beam array utilizing the tensor theory of multiplexed

Sumit Kumar Singh, Kenji Kinashi, Naoto Tsutsumi

    Optics Express
    |November 22, 2024
    PubMed
    Summary

    Researchers generated large arrays of vectorial structured light beams with tailored polarization and topological charge using multiplexed holograms in azo-carbazole polymer. This simplifies creating complex light beams for optics applications.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Vectorial structured light beams offer unique properties for optical communication, data encryption, and optical trapping.
    • Generating tailored beams with arbitrary polarization and large topological charge typically requires complex optical setups or fabrication methods.

    Purpose of the Study:

    • To develop a novel method for generating large arrays of vectorial structured light beams with arbitrary control over topological charge and polarization.
    • To demonstrate the experimental feasibility of this method using readily available materials and techniques.

    Main Methods:

    • Utilized multiplexed polarization holograms and computer-generated holography.
    • Employed azo-carbazole polymer film for beam generation.
    • Developed a theoretical framework for double-exposure polarization holography.

    Main Results:

    • Successfully generated an 8x8 array of structured vector beams with arbitrary topological charges and polarization distributions over a 3mm x 3mm area.
    • Demonstrated the generation of vector vortex beam arrays with exceptionally large topological charges (l=100) by leveraging the polymer film's space-bandwidth product.
    • Achieved experimental realization by simply illuminating the hologram with a plane Gaussian beam, requiring no additional optics.

    Conclusions:

    • The developed method provides a versatile and efficient approach for creating complex vectorial structured light beam arrays.
    • This technique significantly simplifies the generation of tailored light beams, opening new avenues for applications in optics and photonics.