Effects of external reflections on gyrotron backward wave oscillators

S. H. Chen, C. C. Chiu, T. H. Chang

Research output: Contribution to journalConference articlepeer-review


The gyrotron backward-wave oscillator is sensitive to external reflections because it employs a nonresonant interaction structure. These reflections may result in serious output power variations and frequency pulling. A numerical model is developed for the investigation of the reflection effects. It treats beam-wave interactions in the presence of external reflections. As a new feature of the formalism, external reflections are self-consistently determined by the structures, rather than artificially set as a constant value as in previous models. The model has been employed to examine the effects of long-line reflection on the tunable bandwidth and start-oscillation conditions of the gyro-BWO. Results will be presented in the paper.

Original languageEnglish
Article number5P21
Pages (from-to)339
Number of pages1
JournalIEEE International Conference on Plasma Science
StatePublished - 2004
EventIEEE Conference Record - Abstracts: The 31st IEEE International Conference on Plasma Science, ICOPS2004 - Baltimore, MD, United States
Duration: 28 Jun 20041 Jul 2004


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