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Schematic metallic grating and reference coordinate system. Mass identical QDs are assumed to be uniformly distributed in dielectric material (z > s(x)).
(a) The calculated dispersion curves for Au-Si3N4 grating with a = 80 nm and d = 0.1 a. The open and solid circles are for lossless and lossy mode, respectively. (b) The calculated PF spectrum for lossless and lossy mode. The PF is calculated at z = s(x) + 1 nm and averaged within one period.
The calculated PF ave with reduced form (solid symbol) and full integration form (open symbol) for lossless (square) and lossy (circle) SPP mode with Au-Si3N4 grating period of a = 80 nm–130 nm.
The calculated PF ave versus varied emission linewidth with constant central emission frequency = 1.91 eV (1.88 eV). The PF ave and emission linewidth () corresponding to the crossing point versus varied linewidth of DOS spectrum () are also shown in the inset.
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