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Confocal terahertz imaging
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10.1063/1.3173200
/content/aip/journal/apl/95/1/10.1063/1.3173200
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/1/10.1063/1.3173200
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Figures

Image of FIG. 1.
FIG. 1.

(a) Equivalent optical scheme for terahertz confocal imaging scheme, where the gray area represents the subject space in the region of focal plane , and (b) phantom layout.

Image of FIG. 2.
FIG. 2.

Demonstration of the enhancement of lateral resolving power: (a) terahertz image of the test phantom with widely open confocal pinhole (left) and with the confocal pinhole of the diameter (right); (b) terahertz field line scans along the black lines of the images (a), (curve 1) corresponds to the right hand side of (a) and (curve 2) corresponds to the left of (a). The arrows in (b) designate the boarders of grating arrays.

Image of FIG. 3.
FIG. 3.

Demonstration of the enhancement of axial resolving power in the confocal configuration: (a) the upper part of terahertz image is produced by the grating of (top) placed in the focal plane and the lower part is generated by the identical grating of offset from the focal plane by ; (b) the line scans of terahertz field along the solid lines 1 and 2, respectively. Solid curves result from smoothing of experimental points.

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/content/aip/journal/apl/95/1/10.1063/1.3173200
2009-07-09
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Confocal terahertz imaging
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/1/10.1063/1.3173200
10.1063/1.3173200
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