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Terahertz band gap properties by using metal slits in tapered parallel-plate waveguides
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10.1063/1.3514558
/content/aip/journal/apl/97/18/10.1063/1.3514558
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/18/10.1063/1.3514558
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Diagram of TPPWG and slit sample.

Image of FIG. 2.
FIG. 2.

(a) Reference [black line (big pulse), without slits] and output [red line (small pulse), with slits] THz pulses for a air gap. (b) Normalized amplitude spectra of the reference and output. (c) Comparison of power transmission spectrum between measurement (dots) and FDTD simulation (solid line). (d)–(f) are the same as (a)–(c) but for a air gap.

Image of FIG. 3.
FIG. 3.

Comparison of power transmission for normalized time-averaged E field intensity according to the number of slits. The position of the measured average E field intensity is between slits (on the metal surface).

Image of FIG. 4.
FIG. 4.

FDTD simulation with a air gap. The left-hand figures illustrate the B stop-band frequency (1.54 THz), and the left arrowhead indicates THz beam entry to the air gaps: (a) E field intensity distribution; (b) Poynting vectors around the first slit (black and red arrows indicate radian phase difference); (c) Ey field distribution. The right-hand figures illustrate the C stop-band frequency (2.24 THz); (d) E field intensity distribution; (e) Poynting vectors around the third slit; (f) Ey field distribution.

Image of FIG. 5.
FIG. 5.

3D THz absorbance graph for Bragg (A1 and A2) and non-Bragg (B and C) stop bands with different air gaps.

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/content/aip/journal/apl/97/18/10.1063/1.3514558
2010-11-05
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Terahertz band gap properties by using metal slits in tapered parallel-plate waveguides
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/18/10.1063/1.3514558
10.1063/1.3514558
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