Surface field excitation by an obliquely incident wave

I.V. Konoplev, A.R. Phipps, A.D.R. Phelps, Craig Robertson, K. Ronald, A.W. Cross

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16 Citations (Scopus)
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Observation of surface field excitation by an obliquely incident wave inside a cylindrical two-dimensional periodic surface lattice is a step forward toward THz Cherenkov amplifiers. Here we observe and discuss this phenomenon, investigating it using different approaches. The results are compared, and it is shown that an increase in the lattice contrast results in excitation of surface fields by an obliquely incident wave resulting in the eigenmode formation. Measurements were conducted by studying forward transmission of the signal, and it is shown that the measured gaps in the spectra are associated with the eigenmode formation rather than band gap establishment.
Original languageEnglish
Article number141106
Number of pages4
JournalApplied Physics Letters
Issue number14
Publication statusPublished - Apr 2013


  • Surface waves
  • Cherenkov
  • millimetre-wave
  • millimetre-wave source
  • periodic surface lattice
  • cylindrical cavity
  • THz
  • THz electron-beam source
  • wave coupling
  • oblique incident wave
  • free electron devices
  • free electron amplifier


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