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Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution
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10.1063/1.3189702
/content/aip/journal/apl/95/4/10.1063/1.3189702
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/4/10.1063/1.3189702
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Photograph of the tapered photoconductive probe mounted on a wedge with a 30° inclination. The printed circuit board is mounted on a threaded brass holder, which fits into standard 20 tpi mounts and allows for optical back side excitation. (b) The upper part shows the schematic of the probe tip and the lower part zooms into the tip region. The underlying LT-GaAs is colored lime and the tapered wires are colored yellow.

Image of FIG. 2.
FIG. 2.

Time-domain signals sampled in the far-field setup. The incident terahertz wave is polarized in direction (red solid line) and in direction (black solid line), respectively. Inset shows the corresponding Fourier-transformed time-domain signals for and polarization.

Image of FIG. 3.
FIG. 3.

Time-domain signals sampled in the near-field setup. The incident terahertz wave is polarized in the (red solid line) and direction (black solid line), respectively. Inset shows the corresponding Fourier-transformed time-domain signals for and polarization.

Image of FIG. 4.
FIG. 4.

(a) Layout of a single element of the FSS used for experimental characterization. Dimensions are given in micrometer. (b) Terahertz near-field image of the FSS. The image consists of with a size. (c) The field amplitude is plotted across the wide metallic structure (gray shaded) along the red and the blue line shown in (b). In (d) the electric field amplitude scanned across a metallic edge excited in the far-field configuration is plotted.

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/content/aip/journal/apl/95/4/10.1063/1.3189702
2009-07-29
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tapered photoconductive terahertz field probe tip with subwavelength spatial resolution
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/4/10.1063/1.3189702
10.1063/1.3189702
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