Experimental demonstration of a terahertz extended interaction oscillator driven by a pseudospark-sourced sheet electron beam

G. X. Shu, L. Zhang, H. Yin, J. P. Zhao, A. D. R. Phelps, A. W. Cross, G. Liu, Y. Luo, Z. F. Qiao, W. He

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Abstract

We have recently proposed to combine the advantages of a pseudospark-sourced sheet electron beam (PS-SEB) with a planar slow wave structure to generate high power terahertz radiation. To verify this idea, experimental investigation of an extended interaction oscillator based on the PS-SEB has been conducted and presented. A PS-SEB of approximately 1.0 mm×0.17 mm in size with 21.5 A peak current (1.26×104 A/cm2 beam current density) and 34.5 kV peak voltage was measured after propagating a distance of 10-mm without the need of an external focusing magnetic field. A radiation pulse of ~35 ns in duration, and output power of over 10 W at a frequency of ~0.2 THz was measured.
Original languageEnglish
Article number033504
Number of pages5
JournalApplied Physics Letters
Volume112
Issue number3
DOIs
Publication statusPublished - 15 Jan 2018

Keywords

  • pseudospark-sourced electron beam
  • sheet electron beam
  • extended interaction oscillator
  • EIO
  • terahertz (THz) sources
  • pseudospark-driven sources
  • Pseudospark discharge
  • terahertz radiation

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