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Related Experiment Video

Updated: May 1, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Gain switch laser based on micro-structured Yb-doped active fiber.

Vid Agrež, Rok Petkovšek

    Optics Express
    |March 26, 2014
    PubMed
    Summary

    This study presents a high-peak-power, near-infrared, gain-switched fiber laser. The laser achieves 2.3 kW peak power and is suitable for second harmonic generation.

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Fiber Optics

    Background:

    • Fiber lasers offer compact and efficient solutions for various applications.
    • High peak power lasers are crucial for nonlinear optics and material processing.

    Purpose of the Study:

    • To present a novel near-infrared gain-switched fiber laser design.
    • To achieve high peak power output with a simple oscillator-only configuration.
    • To analyze the laser's pulse characteristics and suitability for further applications.

    Main Methods:

    • Utilized a gain-switched fiber laser architecture.
    • Employed a flexible microstructured single polarization fiber.
    • Investigated the dependence of pulse duration on operational parameters.

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  • Measured output power, pulse duration, and polarization extinction ratio.

    • Main Results:

    • Achieved 2.3 kW of peak power.
    • Obtained output pulses with durations under 60 ns.
    • Demonstrated a high polarization extinction ratio due to the fiber type.
    • Theoretically explained the relationship between pulse duration and operational parameters.

    Conclusions:

    • The developed fiber laser design is effective for generating high peak power pulses.
    • The laser's characteristics, including its narrow output spectrum and high polarization extinction ratio, make it suitable for second harmonic generation.
    • The theoretical analysis provides valuable insights for optimizing fiber laser performance.