Waveguide artefacts in terahertz near field imaging

M. Misra; S. R. Andrews; S. A. Maier

doi:10.1063/1.4714532

Waveguide artefacts in terahertz near field imaging

M. Misra, S. R. Andrews, S. A. Maier

Research output: Contribution to journal › Article › Research › peer-review

9 Citations (Scopus)

Abstract

We report experimental and computational 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.

Original language	English
Article number	191109
Number of pages	3
Journal	Applied Physics Letters
Volume	100
Issue number	19
DOIs	https://doi.org/10.1063/1.4714532
Publication status	Published - 7 May 2012
Externally published	Yes

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title = "Waveguide artefacts in terahertz near field imaging",

abstract = "We report experimental and computational 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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AU - Maier, S. A.

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AB - We report experimental and computational 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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Waveguide artefacts in terahertz near field imaging

Abstract

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