Photo-electron and photoionization pumping of XUV lasers by laser produced plasmas

摘要

Experiments involving two different classes of laser produced plasma pumped XUV lasers are presented. In photoionization pumped systems, preferentially ionization of inner shell electrons leads directly to inversion. In photo-electron pumped systems, electrons created by photoionization collisionally excite a neutral species. Photoionization pumped lasers in Xe, Kr, Zn, Cs, and K and photo-electron pumped lasers in Cs and H_2 are reviewed.