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    Corner cubes (CC) improve laser focalization and enable coherent beam combining. This study theoretically and experimentally proves CCs

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    Area of Science:

    • Optics and Photonics
    • Solid-State Lasers
    • Laser Physics

    Background:

    • Corner cubes (CC) are investigated as novel optical elements.
    • Traditional Fabry-Perot resonators have limitations in laser beam quality.
    • The coherent properties of corner cube resonators (CCRs) are not fully understood.

    Purpose of the Study:

    • To theoretically and experimentally demonstrate the unique coherent properties of corner cubes.
    • To investigate the use of corner cubes as total-reflecting mirrors in laser resonators.
    • To explore the application of corner cubes in laser coherent combining systems.

    Main Methods:

    • Theoretical calculations and numerical simulations were performed.
    • Corner cube resonators (CCRs) were designed and fabricated.
    • Experimental setups were used to measure laser far-field intensity profiles.
    • Coherent beam combining configurations utilizing corner cubes were tested.

    Main Results:

    • Corner cubes were theoretically and experimentally proven as peculiar coherent combination elements.
    • Using a CC as a total-reflecting mirror improved laser far-field energy focalization.
    • Symmetric output beams from CCR lasers were found to be coherent, while adjacent beams were partially coherent.
    • Experimental results of laser arrays using CCs for coherent combining agreed well with simulations.

    Conclusions:

    • Corner cubes exhibit unique coherent characteristics beneficial for solid-state lasers.
    • The use of corner cubes in laser coherent combining systems shows significant promise.
    • Corner cube resonators represent a potential future direction for laser research and development.