Super high power laser systems have been pursued for the nuclear fusion research in these 30 years. GEKKO XII glass laser, LEKKO VIII CO2 laser, diode pumped solid state laser and PW cpa Nd glass laser are developed at Osaka University. They have proved to be very effective to the laser fusion research and also to the various applications in the wide fields of science and technology.
"Superhigh-power laser systems and their application", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375102; https://doi.org/10.1117/12.375102