A six-beam multiplexing master-oscillator-power-amplifier (ΜΟΡΑ) high power KrF excimer laser system has been built, the energy on the target has reached 120 J, and the focal intensity on the target can be up to 1013 W/cm2. The researches for ion flight time measurement, plasmas temperature measurement and other plasma physics study are being carried out. A Ti:sapphire/KrF hybrid UV ultrashort pulse laser has been also built, it can produce 50 mJ/220 fs/ 248 nm laser pulse, the intensity on the target exceeds 1017 W/cm2. The hot electron spectrum from the solid target has been studied.