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Backward wave oscillator for high power generation at THz frequencies
Author(s): Diana Gamzina; Xiang Li; Christian Hurd; Ye Tang; Xuejiao Huang; Yuan Zheng; Logan Himes; Michelle Gonzalez; Hanyan Li; Pan Pan; Rosa Letizia; Jinjun Feng; Neville C. Luhmann; Claudio Paoloni
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Paper Abstract

The progress in microfabrication techniques and three dimensional electromagnetic simulations have enabled the fabrication of vacuum electron devices up to 1 THz. In particular, the backward wave oscillator is a compact and powerful THz vacuum source, based on the transfer of energy from an electron beam to an electromagnetic (EM) wave propagating in a slow wave structure. The paper reports the design and fabrication challenges to realize a near-THz Backward Wave Oscillator for plasma diagnostics in nuclear fusion. In particular, the beam optics and confinement as well as the slow wave structure are described. Manufacturing as well as device implementation and demonstration considerations are discussed. The double corrugated waveguide is used with a cylindrical electron beam producing an output power on the order of 1 W.

Paper Details

Date Published: 23 August 2017
PDF: 9 pages
Proc. SPIE 10383, Terahertz Emitters, Receivers, and Applications VIII, 1038303 (23 August 2017); doi: 10.1117/12.2273256
Show Author Affiliations
Diana Gamzina, SLAC National Accelerator Lab. (United States)
Xiang Li, Lancaster Univ. (United Kingdom)
Christian Hurd, Univ. of California, Davis (United States)
Ye Tang, Beijing Vacuum Electronic Research Institute (China)
Xuejiao Huang, Lancaster Univ. (United Kingdom)
Yuan Zheng, Univ. of California, Davis (United States)
Logan Himes, Univ. of California, Davis (United States)
Michelle Gonzalez, Univ. of California, Davis (United States)
Hanyan Li, Beijing Vacuum Electronic Research Institute (China)
Pan Pan, Beijing Vacuum Electronic Research Institute (China)
Rosa Letizia, Lancaster Univ. (United Kingdom)
Jinjun Feng, Beijing Vacuum Electronic Research Institute (China)
Neville C. Luhmann, Univ. of California, Davis (United States)
Claudio Paoloni, Lancaster Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 10383:
Terahertz Emitters, Receivers, and Applications VIII
Manijeh Razeghi; Alexei N. Baranov; Dimitris Pavlidis; John M. Zavada, Editor(s)

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