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Subwavelength nondiffraction beam generated by a plasmonic lens
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10.1063/1.2943274
/content/aip/journal/apl/92/23/10.1063/1.2943274
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/23/10.1063/1.2943274
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

[(a) and (b)] NSOM image of the silver SAA structure at incident wavelength (the yellow arrow indicates the direction of the incident polarization). (c) Line profile of interference fringes near the center of the silver ring.

Image of FIG. 2.
FIG. 2.

(a) NSOM collection mode images of transmitted light at different cross sections away from the focal point (scale bar is ). (b) Transmitted intensity as a function of the radial distance at different cross sections above the silver SAA structure as measured by the NSOM. [Note that inset figures show the normalized intensity of the central spot and FWHM of the central spot as a function of the distance to the focal point .]

Image of FIG. 3.
FIG. 3.

SAA structures with different diameters and its intensity of the central spot at different heights.

Image of FIG. 4.
FIG. 4.

FDTD simulation results of a silver SAA structure. (a) cross section intensity map at above surface. (b) Intensity distribution of the focusing spot along the plane. (c) Intensity distribution of the focusing spot along the plane.

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/content/aip/journal/apl/92/23/10.1063/1.2943274
2008-06-11
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Subwavelength nondiffraction beam generated by a plasmonic lens
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/23/10.1063/1.2943274
10.1063/1.2943274
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