“…In recent years, an alternative approach to the design of multi-terawatt and petawatt femtosecond laser systems has been developed at the Institute of High Current Electronics (Tomsk, Russia), Lebedev Physical Institute (Moscow, Russia), and LP3 Laboratory of the Marseille University (Marseille, France) (Losev et al, 2006;2011a;2011b;Mikheev et al, 2006;Ivanov et al, 2009;Clady et al, 2006;Tcheremiskine et al, 2008). The approach is based on a solid-state femtosecond laser complex (second harmonic, 475 nm) and a photochemical XeF(C-A) amplifier with a gaseous active medium (Mikheev, 1992;Eckstrom & Walker, 1982).…”