Figure 6

(a) Absorption and scattering cross sections of the passive SDGD nanostructure. Super-resonances at M ^I mode (κ _I = 0.0174 and κ _II = 0.600) (b), both of M ^I and M ^II modes (κ _I = 0.0125 and κ _II = 0.858) (c) in the gain-assisted nanostructure.