Characterization of a hollow core fibre-coupled near field terahertz probe

M. Misra, Y. Pan, Christopher Williams, S.A. Maier, S.R. Andrews

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Abstract

We describe the design and performance of a freely positionable THz near field probe based on a hollow core photonic crystal fibre-coupled photoconducting dipole antenna with an integrated sub-wavelength aperture. Experimental studies of the spatial resolution are compared with detailed finite element electromagnetic simulations and imaging artefacts that are a particular feature of this type of device are discussed. We illustrate the potential applications with descriptions of time domain near field studies of surface waves on a metamaterial and multimode propagation in a parallel plate waveguide.
Original languageEnglish
Article number193104
Number of pages10
JournalJournal of Applied Physics
Volume113
Issue number19
DOIs
Publication statusPublished - 21 May 2013

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