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Subterahertz electromagnetic wave generation in a randomly networked single-walled carbon nanotubes photoconductive switch
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10.1063/1.4773487
/content/aip/journal/apl/101/26/10.1063/1.4773487
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/26/10.1063/1.4773487
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Raman spectra of a SWNT film sample at an excitation wavelength of 532 nm. Inset: magnified spectrum of a radial breathing mode (RBM) peak. (b) Experimental measurement data and the fitted curves of electrical conductivity hysteresis on the SWNT film sample when cooling the temperature down from 300 K to 20 K.

Image of FIG. 2.
FIG. 2.

(a) Optical absorption spectra of SWNTs in the near-infrared regime. Inset: a background π-plasmon absorption eliminated spectrum. S11 indicates the lowest transition energy gap (inset is the same as the scale of (a)). (b) Normalized transmission change (ΔT/T) of SWNT film in time-resolved pump-probe spectra.

Image of FIG. 3.
FIG. 3.

(a) The fabricated SWNT photoconductive switch combined with high resistivity Si lens. Inset: scanning electron microscope (SEM) images of plain view (upper left) and cross-section view (upper right). The dashed line box in the inset (below down) indicates the photoconductive gap (10 × 10 μm2) in the center of the log-spiral antenna. (b) The THz-TDS system setup (DCF: dispersion compensating fiber and SMF: single mode fiber).

Image of FIG. 4.
FIG. 4.

(a) DC voltage bias dependence of generated photocurrent temporal waveforms (y-axis, linear scale). (b) FFT spectra of Fig. 3(a) (y-axis, log scale). (c)Bias field dependence of photocurrent amplitude peak values (y-axis, linear scale).

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/content/aip/journal/apl/101/26/10.1063/1.4773487
2012-12-28
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Subterahertz electromagnetic wave generation in a randomly networked single-walled carbon nanotubes photoconductive switch
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/26/10.1063/1.4773487
10.1063/1.4773487
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