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Related Experiment Video

Updated: Oct 26, 2025

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Yb:GdScO3 crystal for efficient ultrashort pulse lasers.

Yuhang Zhang, Shanming Li, Xiao Du

    Optics Letters
    |July 30, 2021
    PubMed
    Summary

    This study introduces Yb:GdScO3 crystal, showing excellent thermal, optical, and laser properties for efficient ultrashort pulse lasers. Its broad emission bandwidth and high thermal conductivity make it a promising material for advanced laser applications.

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    Area of Science:

    • Materials Science
    • Laser Physics
    • Solid-State Physics

    Background:

    • Development of advanced laser materials is crucial for scientific and technological progress.
    • Ytterbium-doped materials are attractive for ultrashort pulse lasers due to their long upper-state lifetime and broad emission bands.
    • Exploring new crystalline hosts for Yb3+ is essential to enhance laser performance.

    Purpose of the Study:

    • To investigate the thermal, optical, and laser properties of Yb:GdScO3.
    • To evaluate its potential as a gain medium for efficient ultrashort pulse lasers.
    • To compare its performance with established laser materials.

    Main Methods:

    • Characterization of thermal conductivity at elevated temperatures.
    • Spectroscopic analysis to determine stimulated emission cross-section and emission bandwidth.

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  • Laser oscillation experiments in a continuous-wave regime.

    • Main Results:

    • Yb:GdScO3 exhibits a stimulated emission cross-section of 0.46×10⁻²⁰ cm² at 1025 nm (E//c) with an 85 nm bandwidth.
    • High thermal conductivity of 5.54 W/(m·K) at 50°C, comparable to Yb:YAG.
    • Demonstrated maximum output power of 13.45 W at 1063.9 nm with 63.3% optical-to-optical efficiency in CW operation.

    Conclusions:

    • Yb:GdScO3 possesses favorable thermal and optical properties for laser applications.
    • The broad emission bandwidth surpasses that of Yb:CaGdAlO4.
    • Yb:GdScO3 is a promising crystalline material for the development of efficient ultrashort pulse lasers.