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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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Lyman-α source for laser cooling antihydrogen.

G Gabrielse, B Glowacz, D Grzonka

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    We developed a new Lyman-α laser for cooling antihydrogen. This laser system uses advanced frequency conversion techniques to produce the necessary light for antihydrogen experiments.

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    Area of Science:

    • Atomic physics
    • Laser technology
    • Antimatter research

    Background:

    • Antihydrogen research requires precise laser cooling.
    • Existing laser systems may not meet specific wavelength and power requirements.

    Purpose of the Study:

    • To develop and present a novel laser system for antihydrogen cooling.
    • To achieve efficient generation of Lyman-α radiation for trapping antihydrogen.

    Main Methods:

    • Utilized a pulsed Ti:sapphire laser at 729 nm.
    • Employed frequency doubling with an LBO crystal.
    • Implemented frequency tripling in a Krypton/Argon gas cell.

    Main Results:

    • Successfully generated laser light at the Lyman-α wavelength.
    • Achieved an average output power of up to 5.7 μW.
    • Demonstrated a viable laser system for antihydrogen experiments.

    Conclusions:

    • The developed laser system is suitable for cooling trapped antihydrogen.
    • This technology advances capabilities for the ATRAP experiment at CERN.
    • The frequency conversion method offers a robust pathway for generating Lyman-α radiation.