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Ultracompact beam splitters based on plasmonic nanoslits
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10.1063/1.3582005
/content/aip/journal/jap/109/9/10.1063/1.3582005
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/9/10.1063/1.3582005
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic of a SPP nanoslit. (a) is a three-dimensional SPP nanoslit impinged by a white light on the big opening side. The incident light is coupled, filtered, and enhanced by the SPP device, becoming transmitted light with narrowband, enhanced intensity, and suppressed beam divergence. (b) is the side view of the nanoslit, where H and D are the height and distance of the structure B . w 1 and w 2 are the width of the bump and groove, respectively. h is the thickness of the metal. a 1 and a 2 are the length of the large and small openings of the nanoslit, respectively.

Image of FIG. 2.
FIG. 2.

(Color online) Intensity distributions of the SPP nanodevices. (a) is a bare V-shape nanoslit in a piece of metal, where planes 1 and 2 are the integrated intensity planes for calculating the integrated transmission spectrum. (b) and (c) correspond to the transmission of nanoslit with structure B and both A and B . The inset shows the magnified detailed nanostructures. (d) shows the transmission spectra for a bare nanoslit, a slit with A , and a silt with A and B , respectively.

Image of FIG. 3.
FIG. 3.

(Color online) Intensity distribution of SPP nanodevices with different size of structure B . (a), (b), and (c) are plotted to show the divergence suppression by using different number of grooves N = 1, 3, and 10.

Image of FIG. 4.
FIG. 4.

(Color online) Intensity distribution of SPP nanodevices with different length D of structure B . (a) - (d) correspond to the structure B with H  = 1.03λ spp, 2.06λ spp, 3.09λ spp, and 4.11λ spp, respectively.

Image of FIG. 5.
FIG. 5.

(Color online) Transmission of the SPP nanodevices with different groove widths w 2. (a) and (c) are the intensity and magnetic field distribution for w 2 = 32 nm, and (b) and (d) are distribution for w 2 = 328 nm.

Image of FIG. 6.
FIG. 6.

(Color online) Transmission of the SPP nanodevices with different groove height D. (a) and (d) are the intensity and magnetic field distribution D = 32 nm, (b) and (e) are distribution for D = 328 nm, and (c) and (f) are distributions for D = 328 nm.

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/content/aip/journal/jap/109/9/10.1063/1.3582005
2011-05-12
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultracompact beam splitters based on plasmonic nanoslits
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/9/10.1063/1.3582005
10.1063/1.3582005
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