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Related Experiment Video

Updated: Jul 29, 2025

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Power-scalable thin-disk Ti:sapphire laser amplifier.

Jianwang Jiang, Xu Zhang, Zhaohua Wang

    Optics Letters
    |May 23, 2023
    PubMed
    Summary

    Researchers developed a 38-femtosecond (fs) chirped-pulse amplified (CPA) titanium-sapphire laser using a thin-disk design. This system achieves high power and excellent beam quality, marking a significant advancement in laser technology.

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    Area of Science:

    • Laser Physics
    • Optics and Photonics
    • Materials Science

    Background:

    • Chirped-pulse amplification (CPA) is crucial for generating high-intensity ultrashort laser pulses.
    • Traditional Ti:sapphire amplifiers face limitations in power scalability and beam quality.
    • The thin-disk laser concept offers a promising avenue for overcoming these limitations.

    Purpose of the Study:

    • To experimentally demonstrate a novel 38-femtosecond (fs) chirped-pulse amplified (CPA) Ti:sapphire laser system.
    • To leverage the power-scalable thin-disk scheme for enhanced laser performance.
    • To achieve high average output power and excellent beam quality at a kilohertz repetition rate.

    Main Methods:

    • Implementation of a Ti:sapphire gain medium in a thin-disk configuration.

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  • Utilizing chirped-pulse amplification (CPA) techniques for pulse stretching and recompression.
  • Characterization of output power, pulse duration, repetition rate, and beam quality (M²).

    • Main Results:

    • Demonstration of a 38-fs CPA Ti:sapphire laser system.
    • Achieved an average output power of 1.45 W at a 1 kHz repetition rate.
    • Obtained a peak power of 38 GW with a beam quality close to the diffraction limit (M² ≈ 1.1).
    • This represents the first reported Ti:sapphire regenerative amplifier using the thin-disk approach at 1 kHz.

    Conclusions:

    • The thin-disk scheme enables a power-scalable Ti:sapphire regenerative amplifier with high beam quality.
    • This approach offers significant advantages over conventional bulk gain amplifiers for ultra-intense laser generation.
    • The demonstrated system paves the way for future advancements in high-power ultrashort pulse laser technology.