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    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Spectroscopy

    Background:

    • Deep-ultraviolet (DUV) lasers are essential tools in various scientific fields.
    • Generating high-energy, single-frequency DUV light below 170 nm presents significant technical challenges.

    Purpose of the Study:

    • To report the development of a novel high-energy, single-frequency solid-state DUV laser.
    • To achieve laser output at a unique wavelength of 167.079 nm.
    • To demonstrate the utility of this laser for precision measurements in atomic physics.

    Main Methods:

    • Utilized eighth-harmonic generation from a diode-pumped Nd:LGGG laser.
    • Achieved single-frequency operation in the DUV spectrum.
    • Characterized laser output energy, wavelength tunability, and linewidth.

    Main Results:

    • Generated a high-energy single-frequency DUV laser at 167.079 nm.
    • Achieved a maximum output energy of 1.5 μJ at 5 Hz repetition rate with 200 μs pulse duration.
    • Demonstrated fine wavelength tunability from 167.075 to 167.083 nm with a linewidth of 0.025 pm.

    Conclusions:

    • This work presents the first high-energy single-frequency solid-state DUV laser below 170 nm.
    • The developed laser source is suitable for direct detection of Al+27 ions via resonance fluorescence.
    • This laser technology has significant implications for multi-ion optical clock development and other precision spectroscopy applications.