%0 Generic
%A Siday, T
%A Natrella, M
%A Wu, J
%A Liu, H
%A Mitrofanov, O
%D 2018
%E Razeghi, M
%E Brown, GJ
%E Lewis, JS
%E Leo, G
%F discovery:10053890
%I Society of Photo-Optical Instrumentation Engineers (SPIE)
%P 1054020:1-1054020:7
%T Resonant scattering probes for terahertz near-field microscopy
%U https://discovery.ucl.ac.uk/id/eprint/10053890/
%V 10540
%X We propose and demonstrate a scattering-type near-field probe, designed to increase the sensitivity of high-resolution scattering probe microscopy at terahertz (THz) frequencies. For efficient scattering of THz radiation, the probe, fabricated from indium, is designed to resonate like a dipole antenna. Efficient excitation is achieved by integrating the probe with a radially-polarized THz source. Using time-domain spectroscopy (TDS), we observe resonant enhancement of the scattered fields, and using aperture-type near-field microscopy, we see high field confinement at the scattering probe apex.
%Z This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions.