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A tapered parallel-plate-waveguide probe for THz near-field reflection imaging

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4 Author(s)
Jingbo Liu ; Department of Electrical and Computer Engineering, MS-378, Rice University, Houston, Texas 77005, USA ; Mendis, R. ; Mittleman, D.M. ; Sakoda, Naokazu

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We demonstrate a broad-band low-loss THz near-field imaging technique based on a tapered parallel-plate waveguide. This technique works in a reflection geometry, which avoids the problem of low energy throughput due to the impedance mismatch and consequently limited spatial resolution, in the transmission geometry. Images reconstructed by the filtered-back-projection algorithm are able to resolve features of size ∼100 μm using radiation with an average wavelength of 1.5 mm.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 3 )

Date of Publication:

Jan 2012

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