Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449186 | Optics Communications | 2017 | 6 Pages |
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 εÎ1,Î2. 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
Authors
J.L. Paz, J.R. León-Torres, Luis Lascano, César Costa Vera,