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Related Experiment Video

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Injection-locked highly Yb3+-doped uncoupled-61-core phosphate fiber laser.

Lizhu Li, Xiushan Zhu, Junfeng Wang

    Optics Letters
    |February 1, 2023
    PubMed
    Summary

    Researchers developed an injection-locked, highly ytterbium-doped, 61-core fiber laser. This novel laser system achieved 9.1 W of linearly polarized, single-frequency output, advancing optical communication and computing technologies.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Laser Physics

    Background:

    • Uncoupled multicore fibers offer potential for advanced optical systems.
    • High-power fiber lasers are crucial for various applications.

    Purpose of the Study:

    • To report an injection-locked, highly ytterbium-doped, 61-core phosphate fiber laser.
    • To characterize its performance compared to free-running operation.

    Main Methods:

    • Fabrication of a 61-core fiber using the stack-and-draw technique.
    • Injection locking of all cores in a linear cavity.
    • Characterization using optical spectrum, near/far-field profiles, and relative intensity noise.

    Main Results:

    • Achieved 9.1 W of linearly polarized, single-frequency output at 1030 nm.
    • Confirmed injection locking of all 61 cores using a scanning Fabry-Perot interferometer.
    • Detailed performance comparison between injection-locked and free-running states.

    Conclusions:

    • The developed 61-core fiber laser demonstrates efficient injection locking.
    • This technology shows promise for high-power, coherent light generation in optical communications and computing.