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

Research output: Contribution to journalLetterpeer-review

22 Citations (Scopus)
49 Downloads (Pure)


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
Issue number3
Publication statusPublished - 15 Jan 2018


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

Cite this