Kwanghsi Wang et al 1985 J. Phys. B: At. Mol. Phys. 18 4539 doi:10.1088/0022-3700/18/23/008
Kwanghsi Wang, Tak-San Ho and Shih-I Chu
Show affiliationsThe authors present an exact treatment of two- and multiquantum transitions in three-level systems driven by two intense linearly polarised monochromatic fields based on the semiclassical many-mode Floquet theory developed recently. Further they extend the almost degenerate perturbation theory of Salwen (1955-6) to the two-mode Floquet Hamiltonian and obtain approximate analytical formulae for multiphoton transition probabilities, resonance bichromatic shifts and widths, and absorption lineshapes beyond the conventional rotating-wave approximation (RWA). Detailed comparison of the analytical, the RWA, and the exact results is given. Several novel features of multiphoton lineshape characteristics are pointed out.
32.80.Wr Other multiphoton processes
32.70.Cs Oscillator strengths, lifetimes, transition moments
31.15.xg Semiclassical methods
Issue 23 (14 December 1985)
Kwanghsi Wang et al 1985 J. Phys. B: At. Mol. Phys. 18 4539
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