Coherent high-order harmonic generation by an isolated two-level system is studied. A perturbative theory for the adiabatic regime is presented; the theory describes the plateau structure found experimentally in noble gases. Numerical results, without the rotating-wave approximation, are used to check the analytical predictions.
© 1992 Optical Society of America
Luis Plaja and Luis Roso-Franco, "Adiabatic theory for high-order harmonic generation in a two-level atom," J. Opt. Soc. Am. B 9, 2210-2213 (1992)