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Coupling of waveguide and surface modes in enhanced transmission through stacking gratings
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10.1063/1.2338796
/content/aip/journal/apl/89/9/10.1063/1.2338796
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/9/10.1063/1.2338796
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Schematic diagram showing the system under consideration. Two silver gratings, each with a period , a thickness , and a slit width , in vacuum are stacked together with a lateral shift , and incident normally by a TM-polarized light wave. The zeroth-order transmittances for shifted and unshifted cases as a function of incident wave frequency are shown for (b) and , (c) and , and (d) and .

Image of FIG. 2.
FIG. 2.

Transmittance as a function of the stack thickness in the shifted case, for slit widths , 100, and . Results are shown at incident frequency where the transmission is a maximum. As thickness decreases, the transmittance increases exponentially and then levels off.

Image of FIG. 3.
FIG. 3.

Strength of the magnetic field in the vicinity of the stacking gratings with and in the unshifted case (upper) and shifted case (lower). Light is incident from below. Regions of higher strength are displayed as lighter patches.

Image of FIG. 4.
FIG. 4.

(Color online) Contributions [see Eq. (2)] of the three dominant forward-going modes to the field at the incident surface and at the interface of the two gratings , for the system considered in Fig. 3, are shown over one period. Both the unshifted case (upper) and shifted case are shown. Results at the interface are displaced vertically by 8 for clarity. The dashed lines outline the gratings.

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/content/aip/journal/apl/89/9/10.1063/1.2338796
2006-08-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Coupling of waveguide and surface modes in enhanced transmission through stacking gratings
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/9/10.1063/1.2338796
10.1063/1.2338796
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