We describe the properties of as subclass of quartet levels of alkalilike atoms and ions that often retain metastability against autoionization and may have large radiative yields. Gain cross sections for XUV lasers with wavelengths between 20 and 100 nm are given.
© 1984 Optical Society of America
Original Manuscript: January 5, 1984
Manuscript Accepted: February 14, 1984
Published: May 1, 1984
S. E. Harris, R. D. Cowan, D. J. Walker, R. G. Caro, and A. J. Mendelsohn, "Quasi-metastable quartet levels in alkalilike atoms and ions," Opt. Lett. 9, 168-170 (1984)