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Modeling of the petawatt PETAL laser chain using Miró code.

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    Miró software effectively simulates high-power laser systems like the Laser Megajoule and PETAL laser chain. It models critical processes including amplification, frequency conversion, and beam smoothing for nanosecond and subpicosecond pulses.

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    Area of Science:

    • Laser physics and simulation
    • High-power laser systems engineering
    • Nonlinear optics

    Background:

    • The Laser Megajoule (LMJ) and PETAL laser chain are crucial for fusion energy research.
    • Accurate simulation of laser propagation, amplification, and focusing is essential for optimizing performance.
    • Previous simulations often lacked comprehensive modeling of broadband effects and complex optical components.

    Purpose of the Study:

    • To validate the Miró software's capability in simulating complex high-power laser systems.
    • To assess Miró's performance in modeling both nanosecond (LMJ) and subpicosecond (PETAL) laser regimes.
    • To demonstrate Miró's ability to handle advanced optical phenomena like broadband amplification and chromatism compensation.

    Main Methods:

    • Intensive simulation of the Laser Megajoule (LMJ) using Miró software.
    • Modeling of the petawatt PETAL laser chain in the subpicosecond regime.
    • Inclusion of amplification, frequency conversion, temporal/spatial beam smoothing, broadband effects, chromatism compensation, beam segmentation/recombination, and off-axis parabola focusing.

    Main Results:

    • Miró software successfully simulated key aspects of the LMJ for nanosecond pulses.
    • The software accurately modeled relevant features of the PETAL laser chain in the subpicosecond regime.
    • Comprehensive modeling capabilities were demonstrated, including broadband amplification and chromatism compensation.

    Conclusions:

    • Miró software is a powerful tool for simulating high-power laser facilities like LMJ and PETAL.
    • The software's ability to handle broadband effects and complex optical configurations is validated.
    • Miró provides a reliable platform for designing and optimizing future laser systems.