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1  kW, 200  mJ picosecond thin-disk laser system.

Thomas Nubbemeyer, Martin Kaumanns, Moritz Ueffing

    Optics Letters
    |April 1, 2017
    PubMed
    Summary

    We developed a high-power laser system using thin-disk technology and chirped pulse amplification, achieving 200 mJ pulse energy at 5 kHz. This advanced laser delivers over 1 kW average power with excellent beam quality for diverse applications.

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    Area of Science:

    • Laser Physics
    • Optics and Photonics
    • Materials Science

    Background:

    • High-power laser systems are crucial for scientific research and industrial applications.
    • Thin-disk laser technology offers advantages in thermal management and scalability.
    • Chirped pulse amplification (CPA) is essential for generating high-energy, ultrashort laser pulses.

    Purpose of the Study:

    • To develop and characterize a novel high-energy, high-repetition-rate laser system.
    • To demonstrate the effectiveness of thin-disk technology combined with CPA for high-power laser generation.
    • To achieve specific performance metrics including pulse energy, repetition rate, average power, and beam quality.

    Main Methods:

    • Utilized a ring-type cavity incorporating two thin Yb:YAG disks.

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  • Employed diode laser systems for pumping the Yb:YAG disks at 969 nm with up to 3.5 kW power.
  • Implemented chirped pulse amplification (CPA) and pulse compression using dielectric gratings.

    • Main Results:

    • Achieved output pulse energies of 200 mJ at a 5 kHz repetition rate.
    • Delivered an average output power exceeding 1 kW.
    • Obtained an excellent output beam quality with M²=1.1.
    • Compressed output pulses to 1.1 ps at full power.

    Conclusions:

    • The developed thin-disk laser system effectively combines CPA for high-energy pulse generation.
    • The system demonstrates high average power and excellent beam quality, suitable for demanding applications.
    • This work highlights the potential of thin-disk technology for scalable, high-performance laser sources.