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Energetic sub-2-cycle laser with 216  W average power.

Steffen Hädrich, Marco Kienel, Michael Müller

    Optics Letters
    |September 16, 2016
    PubMed
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    Researchers developed a high-power few-cycle laser system using two-stage nonlinear compression. This advancement achieves record average power for ultrashort laser pulses, driving progress in attosecond science.

    Area of Science:

    • Laser physics and photonics
    • Attosecond science and technology

    Background:

    • Few-cycle lasers are critical for advancing attosecond physics and related scientific fields.
    • Progress in attosecond science is directly linked to improvements in laser technology.

    Purpose of the Study:

    • To achieve unprecedented average power levels for energetic ultrashort or few-cycle laser pulses.
    • To enhance laser technology for applications in fundamental science and technology.

    Main Methods:

    • Utilized a two-stage nonlinear compression technique.
    • Employed a 660 W femtosecond fiber laser system as the initial source.

    Main Results:

    • Achieved 408 W average power with 320 μJ, 30 fs pulses in the first compression stage.

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  • Further compressed pulses to 216 W average power with 170 μJ, 6.3 fs in the second stage.
  • Demonstrated the highest average power few-cycle laser system to date.

    • Conclusions:

    • The developed laser system represents a significant advancement in high-power few-cycle laser technology.
    • This system is expected to accelerate research in high harmonic generation and attosecond science.