Abstract

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

Measurement of lithium and sodium metastable quartet atoms in a hollow-cathode discharge

D. E. Holmgren, R. W. Falcone, D. J. Walker, and S. E. Harris
Opt. Lett. 9(3) 85-87 (1984)

Core-excited metastable levels: application to spectroscopy, to the generation of picosecond extreme-ultraviolet pulses, and to lasers

S. E. Harris and J. F. Young
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X-ray third-harmonic generation in plasmas of alkalilike ions

P. L. Shkolnikov and A. E. Kaplan
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Level-crossing spectroscopy of atoms dressed by optical photons in degenerate four-wave mixing

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Opt. Lett. 9(3) 82-84 (1984)