Plasma characterization with terahertz time-domain measurements

S.P. Jamison, J.L. Shen, D.R. Jones, R.C. Issac, B. Ersfeld, D. Clark, D.A. Jaroszynski

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Abstract

Terahertz time-domain spectral techniques are applied to the characterization of a He discharge plasma. Electro-optically sampling of the electric field of a quasi-unipolar terahertz pulse transmitted through the plasma has allowed both the real and imaginary parts of the plasma permittivity to be simultaneously measured over a large spectral range. The plasma density and the collisional frequency are determined within a 30 ps duration measurement window. An anomalously high collisional frequency has been measured.
Original languageEnglish
Pages (from-to)4334-4336
Number of pages2
JournalJournal of Applied Physics
Volume93
Issue number7
DOIs
Publication statusPublished - 1 Apr 2003

Keywords

  • electron hole plasma
  • discharge
  • pulses
  • plasma characterization
  • terahertz time-domain measurements

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