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Multicrystal designs for efficient third-harmonic generation.

D Eimerl, J M Auerbach, C E Barker

    Optics Letters
    |August 15, 1997
    PubMed
    Summary
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    Efficient laser frequency tripling for inertial confinement fusion is improved by adding a second mixer or using two doublers. These designs enhance conversion efficiency and dynamic range compared to standard methods.

    Area of Science:

    • Nonlinear optics
    • Laser physics
    • Fusion energy research

    Background:

    • Frequency tripling is crucial for high-power laser systems.
    • Current methods use a doubler and sum-frequency mixer.
    • Large bandwidths are needed for inertial confinement fusion (ICF).

    Purpose of the Study:

    • To improve laser frequency tripling efficiency for ICF.
    • To explore alternative designs for enhanced performance.
    • To increase the dynamic range of conversion efficiency.

    Main Methods:

    • Utilizing a second sum-frequency mixer in the tripling process.
    • Investigating designs with two frequency doublers.
    • Comparing performance against standard two-crystal designs.

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    Main Results:

    • A second mixer significantly boosts conversion efficiencies for large bandwidths.
    • Two-doubler designs provide a wider dynamic range of efficiency versus intensity.
    • Both proposed designs outperform the conventional approach.

    Conclusions:

    • Modified frequency tripling designs offer superior performance for ICF.
    • These advancements are key to optimizing laser energy delivery.
    • Further research can leverage these efficient optical configurations.