Nonlinear Hanle effect in an open V-type level system

We carried out an exact density matrix analysis for the nonlinear Hanle eff ect in an open V-type level system. Steady-state analytical solutions of th e Liouville equation have been obtained and the dependence of the populatio ns of the upper and lower states on the applied magnetic field is discussed . These curves, corresponding to experimental ones when fluorescence or abs orption is detected, are dependent on the excitation and decay rates and ca n be used as a tool for analysing population inversion in laser transitions .