Abstract
The 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.
| Original language | English (US) |
|---|---|
| Article number | 008 |
| Pages (from-to) | 4539-4556 |
| Number of pages | 18 |
| Journal | Journal of Physics B: Atomic and Molecular Physics |
| Volume | 18 |
| Issue number | 23 |
| DOIs | |
| State | Published - 1985 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics