Interferometric refractive index sensing with Terahertz spoof surface plasmons

Steven Andrews, Yi Pan, P G Huggard, Siti Norbaieah Mohamad Hashim

Research output: Contribution to journalArticle

Abstract

Near field interference of spoof surface plasmons propagating on two opposing faces of a thin metal sheet waveguide perforated by a periodic array of tapered holes has been investigated by time-domain terahertz spectroscopy. Closely spaced, chirped spectral interference fringes are observed in the output near the field as a result of the different nonlinear dispersion of the two surface modes. Results illustrating the potential of such a structure for interferometric refractive index sensing of nanolitres of analytes are presented.

Original languageEnglish
Pages (from-to)516-523
Number of pages8
JournalInternational Journal of Infrared and Millimeter Waves
Volume40
Issue number5
Early online date13 Apr 2019
DOIs
Publication statusPublished - 15 May 2019

Keywords

  • Interferometry
  • Metamaterials
  • Refractive index
  • Sensing
  • Terahertz

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Interferometric refractive index sensing with Terahertz spoof surface plasmons. / Andrews, Steven; Pan, Yi; Huggard, P G; Mohamad Hashim, Siti Norbaieah.

In: International Journal of Infrared and Millimeter Waves, Vol. 40, No. 5, 15.05.2019, p. 516-523.

Research output: Contribution to journalArticle

Andrews, Steven ; Pan, Yi ; Huggard, P G ; Mohamad Hashim, Siti Norbaieah. / Interferometric refractive index sensing with Terahertz spoof surface plasmons. In: International Journal of Infrared and Millimeter Waves. 2019 ; Vol. 40, No. 5. pp. 516-523.
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