Article ID Journal Published Year Pages File Type
5449186 Optics Communications 2017 6 Pages PDF
Abstract
In this work we introduce a methodology for the determination of the longitudinal and transversal relaxation times in a two-level system using symmetry properties of the optical responses in the frequency space εΔ1,Δ2. Employing the density matrix formalism and a perturbative scheme for the incident field amplitudes in the Four-wave mixing spectroscopy, the nonlinear macroscopic polarization is determined. The collective effects of the thermal reservoir are modeled as a time dependent frequency, whose manifestation is the broadening of the upper level according to a prescribed random function.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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