Prepulse-Free Petawatt Laser for a Fast Ignitor

Petawatt class lasers worldwide

“…In Asia, the first petawatt class laser was constructed as part of the high energy Nd:glass Gekko XII facility at Osaka University, Japan [77] . They started to implement ultra-short pulse lasers to couple up to Gekko XII [78] with a 30 TW GMII laser, initially for general ultra-high intensity research but lately more focused on the fast-ignition concept for ICF.…”

Evidence of anomalous resistivity for hot electron propagation through a dense fusion core in fast ignition experiments

“…A high dense core with a density (radius) of 50-100 g cm −3 (15-25 µm) is created at the front of the cone by high energy, nanosecond implosion laser pulses [2,3]. A PW class ultra-intense laser (UIL) pulse (λ = 1 µm) [11] is injected into the cone with an energy of 200-300 J in a pulse duration of 0.5 ps. In the experiment, neutron yield is measured with the time-of-flight methods.…”

Ultra-Intense, High Spatio-Temporal Quality Petawatt-Class Laser System and Applications

“…If an OPA front end is utilized, the achieved contrast is at the 10 10 level. Optical parametric chirped-pulse amplification (OPCPA) [42,43] is becoming increasingly popular as a front-end preamplifier system that can significantly improve contrast, but is demonstrated only for the front-end of PW-class Nd:glass laser system for fusion research [44][45][46][47] upstream of an amplifier chain and where the pulse energy is much lower. The use of an OPCPA preamplifier in a petawatt-class high-intensity Ti:sapphire laser has not been demonstrated.…”