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Beam quality control technology for solid-state lasers based on thermal effects.

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    |November 29, 2023
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    This summary is machine-generated.

    This study introduces a novel simulation algorithm and experimental platform to control laser beam quality under high-power pumping. Unexpectedly, thermal effects were found to enhance beam quality, offering a simpler solution than traditional methods.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Computational Physics

    Background:

    • High-power pumping in lasers often leads to thermal effects that degrade beam quality.
    • Controlling laser beam quality (M² factor) is crucial for various applications.

    Purpose of the Study:

    • To develop and validate a simulation algorithm for predicting and mitigating thermal effects in high-power lasers.
    • To investigate the impact of thermal effects on laser beam quality under high-power pumping.

    Main Methods:

    • Development of an M² simulation algorithm utilizing ray trajectory simulation.
    • Establishment of a corresponding experimental platform for validation.
    • Optimization of pulsed laser parameters.

    Main Results:

    • Achieved an optimized M² factor of 2.2 for pulsed lasers.
    • Reached an output power of 25.9 W at a 10 kHz repetition rate.
    • Demonstrated that thermal effects can enhance laser beam quality under specific conditions.

    Conclusions:

    • The developed simulation and experimental approach provides an effective method for beam quality control.
    • Thermal effects, often detrimental, can be leveraged to improve beam quality in high-power laser systems.
    • This strategy offers a streamlined and component-free solution compared to existing methods.