Generation of short-pulse tunable xuv radiation by high-order frequency mixing

The generation of tunable short-pulse xuv radiation between 90 and 40 nm by nonlinear mixing of a fixed-frequency high-power Ti:sapphire laser with tunable radiation is described. As a tunable source an optical parametric generator pumped by part of the Ti:sapphire laser radiation has been used, producing tunable radiation in the range of about 520 to 650 nm with a peak power of up to 0.5 GW.