Numerical Calculations on Multi-Photon Processes in Alkali Metal Vapors
We present the theoretical framework and the approximations needed to numerically simulate the response of alkali metal atoms under multi-photon excitation. By applying the semi-classical approximation, we obtain a system of coupled ordinary and partial differential equations accounting both for the nonlinear dynamics of the atomic medium and the spatiotemporal evolution of the emitted fields. The case of two-photon excitation by a laser field with an additional one-photon coupling field is investigated by numerically solving the set of differential equations employing a self-consistent computational scheme. The computation of the emission intensities and atomic level populations and coherences is then possible.
We investigate the interaction of atoms with a Laguerre-Gaussian beam near the vortex center where an annular nodal area exists on and around the…
We present the theoretical framework and the approximations needed to numerically simulate the response of alkali metal atoms under multi-photon excitation.
We report theoretical results for the transition amplitudes of two-photon transitions induced in a one-active-electron atomic system by a LG10 beam. We identify the excitation pathways for…