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Spectral distribution of electric field magnitude as a function of the thickness of silver layer. The dashed lines indicate the evolution of the ESCP mode (A) and of the three orders of the FP mode (B, C, and D). The arrow indicates the spectral position of the SP mode (E). Inset: geometry and dimensions of the C-shaped aperture studied in this work.
PT vs metal layer thickness for the five transmission modes considered in this study.
Spatial distribution of the first derivative of the -component of the Poynting vector along the direction of propagation, along the line containing point P1 in the inset of Fig. 1. Inset: PT as a function of phase [see Eq. (1)].
Variation in PT with resonant wavelength for three orders of the FP mode.
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