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Related Experiment Video

Updated: Feb 2, 2026

Multifocal Electroretinograms
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Dynamically tunable multi-lobe laser generation via multifocal curved beam.

Enbo Xing, Hui Gao, Jiamin Rong

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    |November 25, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a simple method to create multifocal curved beams (MCB) using microspheres and caustic effects. This technique allows dynamic control over beam curvature and foci, with applications in tunable lasers.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics

    Background:

    • Airy beams and other curved beams have demonstrated significant potential in diverse scientific and technological applications.
    • Controlling light field distribution is crucial for advanced optical manipulation and laser technologies.

    Purpose of the Study:

    • To propose and demonstrate a simple method for generating multifocal curved beams (MCB).
    • To achieve dynamic control over beam curvature and focal points using microspheres and caustic effects.
    • To experimentally validate the MCB concept in an end-pumped microchip laser system.

    Main Methods:

    • Utilizing microspheres to manipulate the light field distribution.
    • Employing the caustic effect to enable dynamic control of beam properties.
    • Conducting simulations to confirm the underlying physical mechanisms.
    • Experimentally integrating the MCB generation scheme into an end-pumped microchip laser.

    Main Results:

    • Successful generation of a multifocal curved beam (MCB) through a straightforward method.
    • Demonstrated dynamic tunability of beam curvature and focal characteristics.
    • Experimental verification of the MCB theory in a practical laser system.
    • Achieved a dynamically tunable multi-lobe laser output.

    Conclusions:

    • The proposed method offers a simple and effective way to generate multifocal curved beams.
    • Microsphere-based light field control combined with caustic effects provides dynamic tunability.
    • The successful implementation in a microchip laser highlights broad application prospects in tunable laser technologies.