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Related Experiment Video

Updated: Feb 26, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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2  W single-longitudinal-mode Yb:YAG distributed-feedback waveguide laser.

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    Summary
    This summary is machine-generated.

    Researchers developed a novel monolithic Yb:YAG distributed-feedback (DFB) laser. This new DFB laser achieves 2W of single longitudinal mode (SLM) output power, significantly outperforming previous dielectric waveguide lasers.

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    Area of Science:

    • Laser Physics
    • Materials Science
    • Photonics

    Background:

    • Single longitudinal mode (SLM) lasers are crucial for scientific and commercial applications.
    • Distributed-feedback (DFB) lasers, often using Bragg structures, enable SLM operation.
    • Existing semiconductor and dielectric DFB waveguide lasers have limited output power.

    Purpose of the Study:

    • To present the first monolithic Yb:YAG DFB laser.
    • To demonstrate high output power and efficiency in an SLM DFB laser.
    • To overcome the power limitations of previous dielectric DFB waveguide lasers.

    Main Methods:

    • Fabrication of the waveguide and DFB structure within an Yb:YAG crystal volume.
    • Utilizing ultrafast laser inscription for monolithic integration.
    • Pumping the laser with an optically pumped semiconductor laser.

    Main Results:

    • Achieved 2W of output power in single longitudinal mode (SLM) operation.
    • Obtained a slope efficiency of 61%.
    • Demonstrated an output power nearly an order of magnitude higher than previous dielectric DFB waveguide lasers.

    Conclusions:

    • The monolithic Yb:YAG DFB laser represents a significant advancement in laser technology.
    • This approach enables compact, robust, and highly efficient high-power SLM laser sources.
    • The developed method paves the way for next-generation laser systems.