Design and particle-in-cell simulation of sub-terahertz extended interaction oscillator

In this paper, a novel sub-terahertz (THz) extended interaction oscillator (EIO) is presented. With the help of a three-dimensional (3D) particle-in-cell (PIC) simulation, design and optimize geometry of THz EIO is performed, which is composed of ladder loaded rectangular waveguide. In present work, the operation center frequency of THz EIO is 95GHz, and the out power 2.0kW is achieved, the efficiency reaches 20.8%, which is operating at voltage and beam current is 16 kV and 0.6A, respectively.