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Optimum areal coverage for perfect transmission in a periodic metal hole array
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) SEM images of the plasmonic structures perforated with different periods: 300, 400, 500, and from left to right. Measured and calculated transmission spectra at normal incidence for four samples with different periods, 300, 400, 500, and along x [(b) and (c)] and y [(d) and (e)] directions, respectively.

Image of FIG. 2.
FIG. 2.

(a) The measured (black circles) and calculated (red squares) peak amplitudes at resonant frequencies. The measurements were carried out by using the samples with the varying from 300 to in an increment of . The perfect conductor model was applied for obtaining the theoretical results. (b) The area-normalized EF. (c) Simulated field distribution in the xy plane of a sample with periods of . The simulation was carried out at the resonant wavelength of . The incident polarization is along the x-axis.

Image of FIG. 3.
FIG. 3.

Time-averaged Poynting vectors simulated at the resonant wavelength of for two different of 400 and , respectively. The polarization of the incident terahertz wave is along the x-direction.

Image of FIG. 4.
FIG. 4.

The comparison between the calculated optimum and the resonant wavelengths obtained in the structures with the apertures of three different widths, 150, 200, and , respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimum areal coverage for perfect transmission in a periodic metal hole array