Fig. 4: Experimental far-field polarization results from fabricated microcavities with different β.
From: Non-orthogonal cavity modes near exceptional points in the far field
a Experimental Dfar labeled by gray and pink dots between two polarization ellipses of two modes varying with β. The dashed line is a fitting curve. b–d Polar maps of two normalized polarization ellipses for β = 165°, β = 173° and β = 187° corresponding to the pink dots in a. The green and orange dots refer to the experimental PL intensity fitting data with error bars when rotating the 1/2λ waveplate and the solid lines refer to theoretical fits. The relative larger error bars in b are due to the weaker PL intensities in experiments.
