Compact millimetre wave and terahertz radiation sources driven by pseudospark-generated electron beam

H. Yin, A. W. Cross, L. Zhang, W. He, D. Bowes, K. Ronald, A. D R Phelps

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

A pseudospark (PS) plasma sourced electron beam was both computationally and experimentally studied for generation of millimetre wave and terahertz radiation. The beam-wave interaction region is a sinusoidal rippled-wall slow wave structure of a backward wave oscillator (BWO) in G-band. An electron beam of ∼1 mm diameter carrying a current of up to 10 A with a sweeping voltage of 42 to 25 kV and pulse duration of 25 ns propagated through the interaction region in a plasma environment without the need for a guiding magnetic field, which resulted in broadband millimetre radiation generation over a frequency range of 186-202 GHz with a maximum power of 20 W.
Original languageEnglish
Title of host publicationIET Colloquium on Millimetre-Wave and Terahertz Engineering & Technology 2016
Place of PublicationStevenage
DOIs
Publication statusPublished - 31 Mar 2016

Keywords

  • BWO
  • pseudospark
  • terahertz generation
  • terahertz wave generation
  • backward wave oscillators
  • electron beams
  • millimetre wave generation
  • plasma sources
  • slow wave structures

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