Figure 1
From: Magnetic Nature of Light Transmission through a 5-nm Gap

(a) Schematic of the problem with a p-polarized oblique incidence. (b) Schematic of the experimental setup. The incident angle was adjusted by moving the location of the incidence mirror. The transmitted light through the sample was collected by an objective lens with a NA of 0.25. Lightpath to SPCM or CCD was selected by using a flip mirror. Inset: cross-sectional SEM image of a 5-nm gap.