# Floquet approach for dynamics in short and intense laser pulses

@article{Medivsauskas2017FloquetAF, title={Floquet approach for dynamics in short and intense laser pulses}, author={Lukas Medivsauskas and Ulf Saalmann and Jan-Michael Rost Max Planck Institute for the Physics of Compl Systems and Dresden. and H Germany}, journal={arXiv: Atomic Physics}, year={2017} }

We present a two-timescale Floquet method that allows one to apply the Kramers-Henneberger approach to short pulses and arbitrary laser frequencies. An efficient numerical procedure to propagate the Floquet Hamiltonian is provided that relies on the Toeplitz matrix formalism and Fast Fourier Transformations. It enables efficient time propagation with large Floquet expansions, while still taking advantage of the cycle-averaged Kramers-Henneberger basis. Three illustrative cases of ionization…

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