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Electric field distributions at the first, second, and third modes of GNR. Electric field distributions at the (a) first (dipole, 1,870 nm), (b) second (quadrupole, 960 nm) and (c) third (sextupole, 700 nm) modes of GNR (a = 30 nm, AR = 8) irradiated by an obliquely incident plane wave of θ = 15°.
