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(a) Schematic of one period of a SPLL. (b) SEM of the SPLL. (c) Schematic of the experimental setup for 3D far-field/2D SP imaging.
(a) SP image when the far-field point source is located at the focus of the objective and the polarization of the light is parallel to the vector of the grating zone. (b) SP image when the far-field point source is shifted away from the focus of the objective. (c) SP image position vs the position of the far-field point source.
Transverse intensity profiles along the focal line of the SP image for the separation between the two far-field point sources , 202, 250, and , respectively. Curves have been offset for clarity. The inset shows the SP image when .
(a) Schematic of the slit structure. (b) Schematic of the experimental setup for 2D SP/3D far-field imaging. (c) Transverse intensity profiles along the axis of the far-field image for the separations between the two SP point sources 314, 668, and 1100 nm, respectively. Curves have been offset for clarity. The inset shows the far-field image when the separation is 1100 nm.
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