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    Researchers explored a new Tm,Ho:GdScO3 crystal for ultrafast lasers. This novel perovskite material shows potential for tunable laser operations around 2 µm, achieving ultrashort pulse durations.

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    Area of Science:

    • Materials Science
    • Laser Physics
    • Spectroscopy

    Background:

    • Rare-earth doped perovskite crystals are attractive for laser applications.
    • Gadolinium Scandium Oxide (GdScO3) offers a unique host structure for dopants.

    Purpose of the Study:

    • To investigate the spectroscopic properties and laser performance of a novel Tm,Ho:GdScO3 crystal.
    • To evaluate its potential for tunable and ultrafast laser operation around 2 µm.

    Main Methods:

    • Crystal growth using the Czochralski method.
    • Polarized spectroscopic measurements.
    • Continuous-wave (CW) and mode-locked laser performance evaluation.

    Main Results:

    • Broad tunable laser operation from 1914 to 2125 nm (215 nm range).
    • Achieved ultrashort pulse duration of 72 fs for E || b polarization.
    • Demonstrated spectral broadening due to multisite structure and dopants.

    Conclusions:

    • Tm,Ho:GdScO3 is a promising gain material for 2 µm lasers.
    • The crystal's properties are suitable for tunable CW and ultrafast mode-locked laser systems.
    • Further research can optimize this material for advanced laser applications.