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Plasmonic interferences and optical modulations in dark-bright-dark plasmon resonators
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10.1063/1.3293443
/content/aip/journal/apl/96/4/10.1063/1.3293443
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/4/10.1063/1.3293443
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Figures

Image of FIG. 1.
FIG. 1.

Nanostructure of dark-bright-dark plasmon resonator. (a) Illustration of a single dark-bright-dark plasmon resonator, which consists of one bright-plasmon cell and two dark-plasmon cells. [(b) and (c)] AFM images of fabricated samples with arrayed Au dark-bright-dark plasmon resonators on substrate. , , , , , , and .

Image of FIG. 2.
FIG. 2.

(a) DDA calculated absorption and scattering spectra of a bright-plasmon cell, in which the incident source is -polarized and incidence angle is 0°. (b) DDA calculated absorption and scattering spectra of two dark-plasmon cells, in which the incident source is -polarized and incidence angle is 80°. The dielectric function of gold and aluminum were taken from Johnson's data (Ref. 28) The refractive index of the surrounding matrix is .

Image of FIG. 3.
FIG. 3.

Transmission of the dark-bright-dark plasmon resonator. (a) DDA calculated extinction spectra a dark-bright-dark plasmon resonator. The parameters used in DDA calculations are the same in Fig. 1. (b) Measured extinction spectra of dark-bright-dark plasmon resonator array. The transmittance around 700 nm is enhanced by using -polarized excitation. The dielectric function of gold and aluminum were taken from Johnson's data, (Ref. 28) .

Image of FIG. 4.
FIG. 4.

[(a) and (b)] Current distribution of a dark-bright-dark plasmon resonator excited by single source with - and -polarization, respectively. [(c) and (d)] Field distribution of a dark-bright-dark plasmon resonator excited by single source with - and -polarization, respectively. [(e) and (f)], Field distribution a dark-bright-dark plasmon resonator excited by two cross-polarized sources with phase delay 0° and 180°, respectively. The dielectric function of gold was taken from Ref. 29. The simulation parameters: , , , , , , , , , and .

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/content/aip/journal/apl/96/4/10.1063/1.3293443
2010-01-27
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Plasmonic interferences and optical modulations in dark-bright-dark plasmon resonators
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/4/10.1063/1.3293443
10.1063/1.3293443
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