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 language | English |
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Pages (from-to) | 4334-4336 |
Number of pages | 2 |
Journal | Journal of Applied Physics |
Volume | 93 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Apr 2003 |
Keywords
- electron hole plasma
- discharge
- pulses
- plasma characterization
- terahertz time-domain measurements