Sheet-Beam Higher Order Mode Extended Interaction Oscillator at 0.34THz

In this paper, a sheet beam EIO operates in the TM31-2π higher-order-mode to increase the cavity size which in turn increases the power-handling capability and relaxes the high machining-precision requirement at 0.34THz is designed. The best operating voltage and operating mode are obtained by analyzing the dispersion curve and R/Q competition in different modes. The PIC predicts the continuous wave output power of extended interactive oscillator tube at 0.34THz is 180.5W when the output is TE10 mode.