An overmoded rectangularly corrugated relativistic surface wave oscillator is designed and theoretically analyzed to produce the high power terahertz radiation with a TM01 mode. The design is fully verified and optimized by 2.5D particle-in-cell simulations. A high power terahertz wave is obtained with the output power of 285 MW at the frequency of 0.148 THz with conversion efficiency 20% when beam voltage is about 400 kV, current 3.8 kA, and the magnetic field 6 T.
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Li et al. (2012) studied this question.
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