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Measurements of modal symmetry in subwavelength plasmonic slot waveguides
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10.1063/1.3254246
/content/aip/journal/apl/95/20/10.1063/1.3254246
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/20/10.1063/1.3254246
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The measured near-field amplitude (a) and phase (b) of the electric field component orthogonal to the long axis of the slot, as indicated by the white arrow. The slot makes an angle of with the -axis. The amplitude follows the excitation beam profile with a superimposed modulation. The modulation period is .

Image of FIG. 2.
FIG. 2.

The measured near-field amplitude (a) and phase (b) of the electric field component parallel to the long axis of the slot, as indicated by the white arrow. A close up of the part of the phase image that is surrounded by a dashed white rectangle is shown in (c). The field is antisymmetric, with opposite phases facing each other across the slot. The amplitude is modulated with a period of .

Image of FIG. 3.
FIG. 3.

Results of the finite-difference time-domain simulation. Amplitude of the perpendicular (a) and parallel (b) components of the electric field 10 nm above a slot with a width of 40 nm. The excitation spot has a Gaussian profile with a waist of . The simulated fields show agreement with the measurements in Figs. 1(a) and 2(a).

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/content/aip/journal/apl/95/20/10.1063/1.3254246
2009-11-17
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measurements of modal symmetry in subwavelength plasmonic slot waveguides
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/20/10.1063/1.3254246
10.1063/1.3254246
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