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Related Experiment Video

Updated: Mar 26, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Regenerative thin-disk amplifier for 300 mJ pulse energy.

Robert Jung, Johannes Tümmler, Ingo Will

    Optics Express
    |February 3, 2016
    PubMed
    Summary

    This study optimized a thin-disk regenerative amplifier, achieving high pulse energy (300 mJ) and excellent stability (0.25% rms) for chirped pulse amplification (CPA) laser systems.

    Area of Science:

    • Laser Physics and Photonics
    • Materials Science (Thin-Disk Technology)

    Background:

    • Regenerative amplifiers are crucial components in high-power laser systems.
    • Thin-disk technology offers advantages in thermal management and scalability for laser amplifiers.

    Purpose of the Study:

    • To upgrade and optimize a regenerative amplifier utilizing thin-disk technology.
    • To enhance pulse energy, energy stability, and beam quality within a chirped pulse amplification (CPA) laser system.

    Main Methods:

    • Implementation of a Yb:YAG thin-disk (17 mm diameter) pumped by 1.75 kW peak power.
    • Operation at a 100 Hz repetition rate within a CPA laser system.
    • Amplification of 1 ns chirped pulses and subsequent pulse compression to 1.8 ps.

    Main Results:

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    • Achieved amplified pulse energy exceeding 300 mJ.
    • Demonstrated excellent energy stability with 0.25% root-mean-square (rms) fluctuation.
    • Obtained superior beam quality with an M(2) value of 1.04 and optical-to-optical efficiency over 18%.

    Conclusions:

    • The optimized thin-disk regenerative amplifier significantly enhances performance for CPA laser systems.
    • The achieved parameters (high energy, stability, beam quality) are suitable for demanding laser applications.