Fig. 3: Local field distributions of MoS2-NPOM and effective areas of MoS2 probe.
From: Probing the limits of plasmonic enhancement using a two-dimensional atomic crystal probe
a, b Electric field distributions at 785 nm of a 32-nm-thick Al2O3 coated 1 L MoS2-NPOM excited by p-polarized (a) and s-polarized (b) light. The MoS2-NPOM cross-sections are taken from a plane 5 nm away from the xz plane. c, d Vertical (c) and horizontal (d) components of the electric field distribution in the 1 L MoS2-NPOM with p-polarization excitation. e Fraction fz (fxy) as a function of integral radius ρz (ρxy). The inset in e shows the definition of integral radius ρ. The effective vertical (horizontal) local field area \({\mathrm{\pi }}R_z^2\) (\({\mathrm{\pi }}R_{xy}^2\)) is determined by setting ρz= Rz (ρxy=Rxy) for fz (Rz) = fxy (Rxy) = 1-e−5 (~99.3%)
