Near-field spectroscopy and tuning of sub-surface modes in plasmonic terahertz resonators.

@article{Mitrofanov2018NearfieldSA,
  title={Near-field spectroscopy and tuning of sub-surface modes in plasmonic terahertz resonators.},
  author={Oleg Mitrofanov and Yanko M Todorov and Djamal Gacemi and Alireza Mottaghizadeh and Carlo Sirtori and Igal Brener and John L. Reno},
  journal={Optics express},
  year={2018},
  volume={26 6},
  pages={7437-7450}
}
Highly confined modes in THz plasmonic resonators comprising two metallic elements can enhance light-matter interaction for efficient THz optoelectronic devices. We demonstrate that sub-surface modes in such double-metal resonators can be revealed with an aperture-type near-field probe and THz time-domain spectroscopy despite strong mode confinement in the… CONTINUE READING