Fig. 2: Q factors and wavelengths of the corner state for different values of g.
From: Low-threshold topological nanolasers based on the second-order corner state
a Calculated Q factors (red) and wavelengths (black) of the corner state for different g. Other parameters for these cavities are a=380nm and D=242nm. The inset shows a schematic of Q optimization, in which the topological PhC is shifted away from the corner by \(\sqrt 2 g\) along the diagonal direction. b PL spectra for cavities with a=380nm, D=242nm and different g. The red dashed line represents the corner state. These peaks in the long-wavelength range originate from edge states. The PL spectra are shifted for clarity
