Using Floquet's theorem, the elements of the time propagation matrix for a class of matter-radiation Hamiltonians are resolved into products of functions periodic over the optical cycle and aperiodic exponential functions of time. The methodology is applied to nonrotating HF, with particular emphasis upon the determination of dynamic Stark shifts and power broadening parameters.
R. E. Wyatt,
"Floquet Theory Of The Interaction Of A Molecule With A Laser Field: Techniques And An Application," Optical Engineering 19(1), 191046 (1 February 1980). https://doi.org/10.1117/12.7972468