Fig. 3: Valley-selective steady-state PL emission at elevated temperatures.
a PL spectra (dots) and fits (solid lines) for \({\sigma }^{+}\) (blue) and \({\sigma }^{-}\) (red) emission obtained from the photon-spin-resolved hyperspectral imaging at elevated temperatures with the same excitation power (5 μW) at 633 nm. λ wavelength. b Spatial images of DOP for the integrated device at elevated temperatures. DOP degree of optical circular polarization. The green circles indicate the location from which the PL spectra in a were collected. Scale bar: 20 μm. c Statistical distribution of spatially averaged DOPs over all the pixels in (b) versus the detuning (δλ) between chiral q-BIC mode and exciton resonances. The horizontal error bars are the standard deviations of individual detuning measurements. The shaded areas are the standard deviations of spatially averaged DOPs at individual values. The green stars represent DOPs for the selected integrated structure shown in (b).
