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Terahertz coherent control of surface plasmon polariton propagation in subwavelength metallic hole arrays
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10.1063/1.4716022
/content/aip/journal/apl/100/19/10.1063/1.4716022
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4716022
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Figures

Image of FIG. 1.
FIG. 1.

Schematics of experimental arrangement for THz coherent control of SPPs in subwavelength metallic hole arrays, the optical images of three samples with hole size of 100 × 50 (S1), 120 × 50 (S2), and 150 × 50 μm (S3) are also shown.

Image of FIG. 2.
FIG. 2.

(a) Transient transmission profiles of three samples, each has a square lattice with a period of 200 μm, the dashed rectangles highlight the oscillation component of THz transmission. (b) The best-fittings of oscillation part (solid lines) produce the frequencies and lifetimes are 0.65 THz and 1.6 ps for sample 1, 0.72 THz and 6.5 ps for sample 2, as well as 0.74 THz and 26 ps for sample 3, respectively. (c) The Fourier transformations of the oscillation components for the three samples. The curves are shifted vertically for clarity.

Image of FIG. 3.
FIG. 3.

Temporal waveforms of transmitted THz wave through sample 2 with the structure of 120 × 50 μm. The time separation of pump and control THz pulses are 2.96 (Δφ = 0), 3.15 (Δφ = π/2), 3.24 (Δφ = 3π/4), and 3.33 ps (Δφ = π), respectively. The top curve presents a double THz pulses transmission through a fused silica substrate only (without metallic film). All curves are shifted vertically for clarity.

Image of FIG. 4.
FIG. 4.

Temporal waveforms of transmitted THz wave through sample 3 with the structure of 100 × 50 μm. The time separation of pump and control THz pulses are 2.95 ps (Δφ = 0), 3.07 ps (Δφ = π/4), 3.18 ps (Δφ = π/2), 3.28 ps (Δφ = 3π/4), and 3.41 ps (Δφ = π), respectively. The top curve presents a double THz pulses transmission through a fused silica substrate (without metallic film). All curves are shifted vertically for clarity.

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/content/aip/journal/apl/100/19/10.1063/1.4716022
2012-05-10
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Terahertz coherent control of surface plasmon polariton propagation in subwavelength metallic hole arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4716022
10.1063/1.4716022
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