Time-Dependent Behavior of the Gyrotron Backward-Wave Oscillator

S. H. Chen, T. H. Chang, K. F. Pao, C. T. Fan, K. R. Chu

Research output: Contribution to journalConference articlepeer-review


Nonstationary oscillations of the gyrotron backward-wave oscillator (gyro-BWO) have been studied with time-dependent simulation and were found to be the major reason for the erratic frequency tuning. In a uniform waveguide, the non-stationary oscillations exhibit self-modulation behavior while displaying no evidence of axial mode competition. But in an interaction structure with tapered sections, high order axial modes could be serially excited before gyro-BWO reaches its stationary state or cause its nonstationary oscillations. These different types of nonstationary oscillations are comparatively studied and the marginal conditions for the stationary operation of gyro-BWO will be presented in the paper.

Original languageEnglish
Pages (from-to)167
Number of pages1
JournalIEEE International Conference on Plasma Science
StatePublished - 2003
Event2003 IEEE International Conference on Plasma Science - Jeju, Korea, Republic of
Duration: 2 Jun 20035 Jun 2003


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