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Updated: Jun 22, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Diode-pumped mode-locked Yb3+:Y2O3 ceramic laser.

A Shirakawa, K Takaichi, H Yagi

    Optics Express
    |May 28, 2009
    PubMed
    Summary
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    Ultrashort pulse generation from diode pumped mode-locked Yb3+:sesquioxide single crystal lasers.

    Optics express·2011

    This study reports the first continuous-wave mode-locked ceramic laser using ytterbium-doped Y2O3. This novel ytterbium laser generates ultrashort femtosecond pulses with high energy and average power.

    Area of Science:

    • Laser Physics
    • Materials Science

    Background:

    • Development of solid-state lasers for various applications.
    • Challenges in achieving ultrashort pulse generation in ceramic laser hosts.

    Purpose of the Study:

    • To report the development of a diode-pumped femtosecond ytterbium laser utilizing Y2O3 ceramic.
    • To demonstrate passive mode-locking in a ceramic laser medium.

    Main Methods:

    • Utilized a diode-pumped configuration for the ytterbium laser.
    • Employed a semiconductor saturable-absorber mirror for passive mode-locking.
    • Used Y2O3 ceramic as the host material for ytterbium doping.

    Main Results:

    • Generated 615-fs pulses at a 98-MHz repetition rate.

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    Published on: July 12, 2017

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  • Achieved a center wavelength of 1076.5 nm.
  • Obtained 420 mW average power and 4.3 nJ pulse energy with 2.6 W absorbed pump power.

    • Conclusions:

    • Successfully demonstrated the first continuous-wave mode-locked ceramic laser.
    • Y2O3 ceramic is a viable host material for high-performance femtosecond lasers.
    • The developed laser offers potential for applications requiring ultrashort pulses.