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Advanced laser development and plasma-physics studies on the multiterawatt laser.

I A Begishev, V Bagnoud, S-W Bahk

    Applied Optics
    |February 24, 2022
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    The multiterawatt (MTW) laser facility, initially a prototype, now supports high-energy-density physics research. It enables advanced studies in laser technologies and target diagnostics using its versatile capabilities.

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    Area of Science:

    • Physics
    • Laser Technology
    • High-Energy-Density Physics

    Background:

    • The multiterawatt (MTW) laser was initially developed as a prototype front end for a petawatt laser system.
    • It is a 1053 nm hybrid laser system utilizing optical parametric chirped-pulse amplification (OPCPA) and Nd:glass for gain.

    Purpose of the Study:

    • To establish a comprehensive laser facility for high-energy-density physics research.
    • To advance the development of short-pulse laser technologies and target diagnostics.
    • To explore extensions for ultrahigh-intensity laser development.

    Main Methods:

    • Integration of compressors and target chambers to create a complete laser facility.
    • Utilizing a hybrid gain medium combining OPCPA and Nd:glass.
    • Implementing further extensions for advanced laser systems like all-OPCPA and Raman plasma amplifiers.

    Main Results:

    • The MTW laser facility achieved an output energy of up to 120 J.
    • Variable pulse durations ranging from 20 femtoseconds to 2.8 nanoseconds are supported.
    • The facility has been utilized for a variety of scientific experiments.

    Conclusions:

    • The MTW laser facility is a versatile platform for high-energy-density physics research.
    • It plays a crucial role in advancing short-pulse laser technologies and diagnostics.
    • Ongoing extensions promise further contributions to ultrahigh-intensity laser development.