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We describe a traveling wave terahertz (0.75–1.1 THz) amplifier that uses a meandering TE01 waveguide coupled to a plasma beam and discuss its design, microfabrication, and cold/hot tests. Motivations for using plasmas instead of electron beams are: 1) thermionic emission required in e-beam generation can be replaced with gas ionization, 2) electrostatic lenses and magnetic focusing structures can...
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