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Related Experiment Video

Updated: Jun 22, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Passively mode-locked Yb:Lu(2)O(3) laser.

U Griebner, V Petrov, K Petermann

    Optics Express
    |June 2, 2009
    PubMed
    Summary

    Researchers achieved mode locking in a ytterbium-doped lutetium sesquioxide (Yb:Lu2O3) laser, generating ultrashort femtosecond pulses. This breakthrough demonstrates Yb:Lu2O3 as a viable host for high-performance laser applications.

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    Area of Science:

    • Laser physics
    • Materials science
    • Solid-state optics

    Background:

    • Lutetium sesquioxide (Lu2O3) possesses unique thermal properties, making it a candidate for laser host materials.
    • Ytterbium-doped materials are well-established for laser applications due to their favorable spectroscopic properties.

    Purpose of the Study:

    • To investigate the potential of Yb:Lu2O3 as a laser host.
    • To demonstrate mode-locked operation and characterize the performance of a Yb:Lu2O3 laser.

    Main Methods:

    • Mode locking was achieved using a semiconductor saturable-absorber mirror.
    • Dispersion compensation techniques were employed to shorten pulse durations.

    Main Results:

    • The Yb:Lu2O3 laser achieved an average output power of up to 470 mW in the picosecond regime.
    • A maximum pump efficiency of 32% was recorded.
    • Ultrashort pulses as short as 220 fs were generated at an average power of 266 mW with dispersion compensation.
    • This represents the first reported femtosecond oscillator based on Yb:Lu2O3.

    Conclusions:

    • Yb:Lu2O3 is a highly promising material for developing efficient, ultrashort pulsed lasers.
    • The demonstrated performance highlights the potential of Yb:Lu2O3 in advanced laser applications.
    • This work establishes a new benchmark for femtosecond laser oscillators using sesquioxide hosts.

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