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    • The Mercury Project: A High Average Power, Gas-Cooled Laser for Inertial Fusion Energy Development

    A. Bayramian,P. Armstrong,E. Ault,R. Beach,C. Bibeau,J. Caird,R. Campbell,B. Chai,J. Dawson,C. Ebbers,A. Erlandson,Y. Fei,B. Freitas,R. Kent,Z. Liao,T. Ladran,J. Menapace,B. Molander,S. Payne,N. Peterson,M. Randles,K. Schaffers,S. Sutton,J. Tassano,S. Telford,E. Utterback

    FUSION SCIENCE AND TECHNOLOGY（2007）

    Lawrence Livermore Natl Lab

    Cited 171|Views21
    Abstract
    Hundred-joule, kilowatt-class lasers based on diode-pumped solid-state technologies, are being developed worldwide for laser-plasma interactions and as prototypes for fusion energy drivers. The goal of the Mercury Laser Project is to develop key technologies within an architectural framework that demonstrates basic building blocks for scaling to larger multi-kilojoule systems for inertial fusion energy (IFE) applications. Mercury has requirements that include: scalability to IFE beamlines, 10 Hz repetition rate, high efficiency, and 10(9) shot reliability. The Mercury laser has operated continuously for several hours at 55 J and 10 Hz with 2 fourteen 4 x 6 CM ytterbium doped strontium fluoroapatite amplifier slabs pumped by eight 100 kW diode arrays. A portion of the output 1047 nm was converted to 523 nm at 160 W average power with 73 % conversion efficiency using yttrium calcium oxy-borate (YCOB).
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