We propose three XUV laser schemes in the 30-50-nm wavelength region that can be driven by 10-Hz ultrashort-pulse terawatt laser systems. Tunneling ionization by circularly polarized radiation produces both the ions and hot electrons necessary to excite the upper laser level.
© 1994 Optical Society of America
B. E. Lemoff, C. P. J. Barty, and S. E. Harris, "Femtosecond-pulse-driven, electron-excited XUV lasers in eight-times-ionized noble gases," Opt. Lett. 19, 569-571 (1994)