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Computer modeling and parametric study for a pulsed h(2) + f(2) laser.

R L Kerber, G Emanuel, J S Whittier

    Applied Optics
    |February 2, 2010
    PubMed
    Summary

    This study simulates a pulsed hydrogen fluoride (HF) laser, revealing that laser performance critically depends on the balance between vibrational-translational deactivation and pumping reactions. Photon flux also significantly influences chemical mechanisms.

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    Chain reaction pulsed HF laser: a simple model.

    Applied optics·2010

    Area of Science:

    • Chemical kinetics
    • Laser physics
    • Computational modeling

    Background:

    • Pulsed hydrogen fluoride (HF) lasers are crucial for various applications.
    • Understanding the interplay between chemical reactions and optical processes is vital for optimizing laser performance.

    Purpose of the Study:

    • To simulate a pulsed HF laser system.
    • To analyze the influence of chemical kinetics and cavity parameters on laser pulse characteristics.
    • To investigate the impact of reaction rate uncertainties and photon flux on laser output.

    Main Methods:

    • Developed a computer simulation incorporating a 68-reaction chemical kinetic model.
    • Assumed Boltzmann distribution for rotational levels within each vibrational level.
    • Focused on line-center transitions with maximum gain.

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  • Analyzed cavity and chemical mechanisms to establish relationships between pumping and depletion rates.

    • Main Results:

    • Established a relationship between vibrational level pumping and depletion rates.
    • Demonstrated that laser performance is highly sensitive to the relative rates of vibrational-translational deactivation and pumping reactions.
    • Found that photon flux significantly affects the chemical mechanisms within the laser.

    Conclusions:

    • The simulation provides a comprehensive study of factors influencing pulsed HF laser performance.
    • Optimizing laser output requires careful consideration of the balance between deactivation and pumping reaction rates.
    • Further research into the impact of photon flux on chemical pathways is warranted.