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Total routing and absorption of photons in dual color plasmonic antennas
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10.1063/1.3670051
/content/aip/journal/apl/99/24/10.1063/1.3670051
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/24/10.1063/1.3670051
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Scheme of the biMIM structure made of two different ribbons, which widths are, respectively, w 1 and w 2, integrated in each period d = 5 μm. The bottom gold layer is continuous and thick enough to be considered as infinite. Each ribbon consists of two layers: ZnS (h ZnS = 150 nm) and gold (h Au = 50 nm). They are separated by a distance l = (d − w 1 − w 2)/2. (b) Angled scanning electron microscope (SEM) image of a fabricated biMIM structure (w 1 = 1.62 μm and w 2 = 1.74 μm).

Image of FIG. 2.
FIG. 2.

(Color online) (a) Reflectivity of a TM-polarized plane wave impinging on the biMIM grating at an incidence of 13° measured (solid lines) and computed (dashed lines). (b) Computed maps of the magnetic field intensity (side view) of the biMIM structure for wavelengths of total absorption and . The field is concentrated in the MIM structure of width wi corresponding to , which evidences the achievement of photon routing in this structure. (c) Computed absorption spectra in each ribbon of the biMIM structure.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Measured dispersion diagram of a biMIM structure with ribbons of widths w 1 = 1.87 μm and w 2 = 1.99 μm for angles between 13° and 70° and wavelengths between 6.6 μm and 15 μm. The positions of the resonances are independent of the incidence angle. (b) Measured reflectivity spectra for various angles. The reflectivity stays below 90% up to 40°. (c) and (d) Computed absorption in each ribbon as a function of the incidence angle at and . This confirms that the sorting efficiency remains independent of the incidence angle.

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/content/aip/journal/apl/99/24/10.1063/1.3670051
2011-12-13
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Total routing and absorption of photons in dual color plasmonic antennas
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/24/10.1063/1.3670051
10.1063/1.3670051
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