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A repetitive 0.14 THz relativistic surface wave oscillator
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Image of FIG. 1.
FIG. 1.

Structure of the 0.14 THz RSWO.

Image of FIG. 2.
FIG. 2.

Dispersion curve of the overmoded SWS.

Image of FIG. 3.
FIG. 3.

Injected diode voltage.

Image of FIG. 4.
FIG. 4.

The simulated output power and frequency (a) instantaneous output power and (b) Fourier spectrum of electric field.

Image of FIG. 5.
FIG. 5.

Experimental device of 0.14 THz overmoded RSWO.

Image of FIG. 6.
FIG. 6.

Current in magnetic field coil.

Image of FIG. 7.
FIG. 7.

Cross-section view of the graphite cathode.

Image of FIG. 8.
FIG. 8.

Damaged pattern of Teflon target bombarded by ten-shots electron beams.

Image of FIG. 9.
FIG. 9.

Typical beam voltage pulses (top) and beam currents (bottom) with 10 PPS shown on oscilloscope.

Image of FIG. 10.
FIG. 10.

Period pieces and assembly of SWS.

Image of FIG. 11.
FIG. 11.

Layout of the measurement system.

Image of FIG. 12.
FIG. 12.

The detected terahertz pulses (a) terahertz pulse series (top) and (b) single pulse (top).

Image of FIG. 13.
FIG. 13.

Intermediate frequency signal and its Fourier transform (a) intermediate frequency signal and (b) Fourier transform of the intermediate frequency signal.

Image of FIG. 14.
FIG. 14.

3-D Image of near-field radiation pattern.

Image of FIG. 15.
FIG. 15.

Measured power density distribution in far-field region.


Generic image for table
Table I.

Structural parameters of the 0.14THz RSWO.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A repetitive 0.14 THz relativistic surface wave oscillator