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Multi-atmosphere picosecond CO2 amplifier optically pumped at 4.3  μm.

D Tovey, S Ya Tochitsky, J J Pigeon

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    Summary
    This summary is machine-generated.

    Numerical simulations show gigawatt power amplification of picosecond 10 μm pulses is possible in a CO2 laser. This is achieved using multi-millijoule 4.3 μm pulses from a tunable Fe:ZnSe laser for optical pumping.

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    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Materials Science

    Background:

    • High-power lasers are crucial for various scientific applications.
    • Carbon dioxide (CO2) lasers offer potential for specific wavelength applications.
    • Optical pumping is a method to energize laser media.

    Purpose of the Study:

    • To investigate the feasibility of amplifying picosecond 10 μm pulses to gigawatt power levels.
    • To explore the use of a tunable Fe:ZnSe laser for optical pumping of a CO2 laser.

    Main Methods:

    • Numerical simulations were employed to model the amplification process.
    • A 20-atmosphere CO2 laser gain medium was simulated.
    • Multi-millijoule 4.3 μm pulses from a Fe:ZnSe laser were used as the pump source.

    Main Results:

    • The study demonstrates the possibility of achieving gigawatt peak powers for picosecond 10 μm pulses.
    • Successful amplification was shown within the simulated optically pumped CO2 laser system.

    Conclusions:

    • Optically pumped CO2 lasers can amplify picosecond pulses to high powers.
    • Tunable Fe:ZnSe lasers are suitable pump sources for this application, enabling gigawatt-class 10 μm sources.