Abstract

Multistep laser excitation makes it possible to excite one electron at at time in the excitation of doubly excited states. This suppresses the direct continuum excitation, removing the familiar Beutler–Fano interference profiles from the excitation of autoionizing states. Removing this complexity in the excitation process allows one to investigate inherently complex atomic systems, such as interacting autoionizing series. The ability to examine such systems experimentally has led to the development of theoretical techniques based on quantum-defect theory to interpret the experimental results. This powerful combination of complementary experimental and theoretical techniques has led to substantial advances in the study of autoionizing states.

© 1987 Optical Society of America

Limitation of sequential laser excitation for double-Rydberg autoionizing states of barium and quantum-defect approach

J. Boulmer, P. Camus, J.-M. Lecomte, and P. Pillet
J. Opt. Soc. Am. B 5(10) 2199-2202 (1988)

Double-Rydberg spectroscopy of the barium atom

J. Boulmer, P. Camus, and P. Pillet
J. Opt. Soc. Am. B 4(5) 805-810 (1987)

One-photon resonant two-photon excitation of Rydberg series close to threshold

G. Alber, Th. Haslwanter, and P. Zoller
J. Opt. Soc. Am. B 5(12) 2439-2445 (1988)

Photoabsorption and photoionization of titanium from excited states

Gregory Miecznik and Chris H. Greene
J. Opt. Soc. Am. B 13(2) 244-256 (1996)

Multiple excitations of atomic electrons

Chris H. Greene
J. Opt. Soc. Am. B 4(5) 775-783 (1987)