Figure 2

Comparison of the three-step approach and the complete model for predicting Hanle resonances shapes at various optical powers. The five first plots show the photodetected optical power \(P_{pd}\) as a function of the magnetic field, in units of the magnetic linewidth. Experimental data (in black) is compared to the theoretical expectations resulting from the three-step approach comprising only with isotropic relaxation (blue line) and complete model including anisotropic relaxation resulting from the pumping (red line). The bottom right plot shows the dependence of the full-width at half maximum of the curves as a function of the optical power for the experiment and the two theoretical models. The optical powers are given with 10% systematic uncertainty coming from optical power calibration