Detailed exawatt laser systems are being designed now. Pulsed lasers are rapidly reaching higher power by shortening the pulses and increasing the power. Multiple ten petawatt systems are either operating or being completed now. 2018 and 2019 will see several 50, 100 and 200 Petawatt laser systems. The peak power of pulsed laser systems is increasing by 1000 times every ten years.
Zettawatt pulsed laser systems were considered a few years ago.
Zettawatt-exawatt lasers and their applications in ultrastrong-field physics (2002)
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