R. Gebarowski et al., R-MATRIX-FLOQUET THEORY OF MULTIPHOTON PROCESSES .10. THEORY OF HARMONIC-GENERATION, Journal of physics. B, Atomic molecular and optical physics, 30(7), 1997, pp. 1837-1846
The R-matrix-Floquet theory of multiphoton processes is extended to en
able harmonic generation rates for a multi-electron atomic system inte
racting with a strong linearly polarized laser to be calculated. The m
atrix elements of the harmonic components are defined and several meth
ods for their computation are described. In the two companion papers,
applications of the theory to one-electron systems and to third-harmon
ic generation in magnesium are presented.