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 language | English |
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Article number | 193104 |
Number of pages | 10 |
Journal | Journal of Applied Physics |
Volume | 113 |
Issue number | 19 |
DOIs | |
Publication status | Published - 21 May 2013 |