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Concurrent field enhancement and high transmission of THz radiation in nanoslit arrays
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10.1063/1.3617476
/content/aip/journal/apl/99/4/10.1063/1.3617476
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/4/10.1063/1.3617476

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Schematic illustration of a 1D nanoslit array. (b) Scanning electron microscope image with the inset showing a zoomed-in image of one of the slits.

Image of FIG. 2.
FIG. 2.

(Color online) Field enhancement factor F (red curve) and transmission T (black curve) for varying periodicity d at (a) 0.5 THz and (b) 1 THz. The black squares represent F = T/β. (c) Transmission versus d/λ for four different frequencies.

Image of FIG. 3.
FIG. 3.

(Color online) Snapshots of the spatial field distribution measured approximately 10 ps after the THz pulse has passed through a substrate (a) without slits, and with slits having (b) 1 μm, and (c) 100 μm spacing (enhanced online, Video 1). The images are plotted on the same absolute gray scale. (d) Simulation corresponding to (c) showing the entire sandwich geometry (enhanced online, Video 2). [URL: http://dx.doi.org/10.1063/1.3617476.1] [URL: http://dx.doi.org/10.1063/1.3617476.2]10.1063/1.3617476.110.1063/1.3617476.2

Image of FIG. 4.
FIG. 4.

(Color online) (a) Time profile of THz pulses transmitted through an unstructured Si substrate and the d = 100 μm slit array. (b) Corresponding spectra. (c) Simulated enhancement factor for a freestanding d = 100 μm array, the slit array on substrate, and the field enhancement obtained from the measurement. The arrows mark the spectral modulations related to grating modes.

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/content/aip/journal/apl/99/4/10.1063/1.3617476
2011-07-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Concurrent field enhancement and high transmission of THz radiation in nanoslit arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/4/10.1063/1.3617476
10.1063/1.3617476
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