Year: 2025
Type: article
Abstract: A theory of the absorption of a laser field by an atomic or condensed matter medium is presented for the case where the medium is also interacting with a strong electromagnetic field. The rotating wave approximation is not assumed for the latter. It is shown that in the weak probe limit the Lindblad master equation reduces to a smaller system of linear equations for the relevant steady-state coherences. In this limit, the complex susceptibility of the medium can be expressed in terms of individual contributions of decaying dressed states, the latter being eigenstates of a non-Hermitian Floquet Hamiltonian.
Author: R. M. Potvliege
Institution: Durham University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funder: Strong
OpenAlex ID: W4409162293