Dual-Mode Terahertz Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam

Jie Xie, Xue-Song Yuan, Liang Zhang, Adrian W. Cross, Hua-Bi Yin, Qing-Yun Chen, Tong-Bin Yang, Xiao-Tao Xu, Yang Yan, Lin Meng
2021 Journal of Electronic Science and Technology  
Keywords: Dual-mode operation Extended interaction oscillator (EIO) High-power radiation Pseudospark-sourced electron beam Sheet electron beam (SEB) Terahertz A B S T R A C T A terahertz dual-mode extended interaction oscillator (EIO) driven by a pseudospark-sourced sheet electron beam (SEB) was presented. The major advantages of the newly developed circuit include 1) high-density SEB interacting with the TM 11 and TM 31 modes, respectively, and 2) high output power of over 1 kW at the
more » ... ertz frequency range. Two different types of 2π modes and their output characteristics were studied, and the circuit was optimized to ensure efficient outputs of two standing-wave modes. The three-dimensional (3D) particle-in-cell (PIC) simulation predicts the maximum output power of 1.3 kW with a 3-dB bandwidth of~0.5 GHz at 303 GHz when operating at the TM 11 mode, and 3.18 kW, 3-dB bandwidth of~0.85 GHz at 364 GHz when operating at the TM 31 mode.
doi:10.1016/j.jnlest.2021.100093 fatcat:7ugj6wkrqfeoljj7gnygoon7e4