CST – Computer Simulation Technology

Waveguide artefacts in terahertz near field imaging

Title:
Waveguide artefacts in terahertz near field imaging
Author(s):
M. Misra, S.R Andrews, S.A Maier
Source:
Applied Physics Letters
Vol./Issue/Date:
Volume: 100 , Issue: 19 , May 2012
Year:
2012
Page(s):
191109-1 - 191109-3
Keywords:
Waveguide artefacts, terahertz field imaging
Abstract:
We report experimental and computional studies of the behaviour of a photoconductive THz near field probe when imaging a simple planar metal-dielectric structure. We show that the excitation of waveguide modes in the gap between sample and probe, together with diffraction at the probe, must generally be taken into account when analysing images and that electromagnetic simulations provide a very useful aid to interpretation.
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