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Tapered fiber based high power random laser.

Hanwei Zhang, Xueyuan Du, Pu Zhou

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    This summary is machine-generated.

    We developed a high-power random fiber laser (RFL) using tapered fiber, overcoming power limitations. This novel tapered RFL design achieves 26.5 W output power with maintained beam quality.

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    Area of Science:

    • Photonics
    • Laser Technology
    • Optical Engineering

    Background:

    • Random fiber lasers (RFLs) face power scaling limitations.
    • Maintaining beam quality in high-power fiber lasers is challenging.

    Purpose of the Study:

    • To propose and demonstrate a novel high-power random fiber laser (RFL) using tapered fiber.
    • To overcome the power scaling limitations of conventional RFLs.
    • To maintain good beam quality in high-power RFLs.

    Main Methods:

    • Utilized a 1 km long tapered fiber with a core diameter changing from 8 μm to 20 μm.
    • Employed a half-open cavity configuration.
    • Modified steady-state light propagation equations to include effective core area for numerical modeling.

    Main Results:

    • Achieved an output power of 26.5 W.
    • The numerical model accurately described the power characteristics of the tapered fiber RFL.
    • Demonstrated higher power exporting potential compared to conventional single-mode RFLs.

    Conclusions:

    • The tapered fiber RFL design successfully overcomes power scaling limitations.
    • This approach offers a promising solution for high-power laser applications.
    • The developed numerical model validates the experimental findings and predicts performance.