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0.85 PW laser operation at 3.3 Hz and high-contrast ultrahigh-intensity λ = 400  nm second-harmonic beamline




Wang, Yong, author
Wang, Shoujun, author
Rockwood, Alex, author
Luther, Bradley M., author
Hollinger, Reed, author
Curtis, Alden, author
Calvi, Chase, author
Menoni, Carmen S., author
Rocca, Jorge J., author
Optical Society of America, publisher

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We demonstrate the generation of 0.85 PW, 30 fs laser pulses at a repetition rate of 3.3 Hz with a record average power of 85 W from a Ti:sapphire laser. The system is pumped by high-energy Nd:glass slab amplifiers frequency doubled in LiB3O5 (LBO). Ultrahigh-contrast λ = 400 nm femtosecond pulses were generated in KH2PO4 (KDP) with>40% efficiency. An intensity of 6.5 × 1021 W∕cm2 was obtained by frequency doubling 80% of the available Ti:sapphire energy and focusing the doubled light with an f∕2 parabola. This laser will enable highly relativistic plasma experiments to be conducted at high repetition rate.


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diode pumped lasers
femtosecond lasers
femtosecond pulses
laser amplifiers
laser operation
ti:sapphire lasers


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