A 0.14 THz relativistic coaxial overmoded surface wave oscillator with metamaterial slow wave structure

Journal Article · Mon Dec 15 04:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4903202· OSTI ID:22407925

Guo, Weijie ^[1]; Wang, Jianguo; Chen, Zaigao; Cai, Libing ^[1]; Wang, Yue; Wang, Guangqiang; Qiao, Hailiang ^[2]

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1. Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049 (China)
2. Northwest Institute of Nuclear Technology, Xi'an 710024 (China)

This paper presents a new kind of device for generating the high power terahertz wave by using a coaxial overmoded surface wave oscillator with metamaterial slow wave structure (SWS). A metallic metamaterial SWS is used to avoid the damage of the device driven by a high-voltage electron beam pulse. The overmoded structure is adopted to make it much easy to fabricate and assemble the whole device. The coaxial structure is used to suppress the mode competition in the overmoded device. Parameters of an electron beam and geometric structure are provided. Particle-in-cell simulation results show that the high power terahertz wave at the frequency of 0.14 THz is generated with the output power 255 MW and conversion efficiency about 21.3%.

• OSTI ID: 22407925
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 21; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTERIZED SIMULATION
ELECTRIC POTENTIAL
ELECTRON BEAMS
ENERGY CONVERSION
GEOMETRY
METAMATERIALS
OSCILLATORS
PULSES
RELATIVISTIC RANGE
WAVE PROPAGATION