A non-perturbative theoretical method has been generalised to compute rovibrational multiphoton excitation probabilities in small molecules. The practicability of the method is illustrated by direct computation for CO. Novel non-linear features emerge in the absorption spectrum when the power broadening of individual rovibrational lines becomes comparable to the rotational constant of the molecule. The results also establish that over-simplified N-level models should be treated with caution.
|Original language||English (US)|
|Number of pages||12|
|Journal||Journal of Physics B: Atomic and Molecular Physics|
|State||Published - Dec 1 1979|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics