Structure design and simulation of extended interaction oscillator

In this paper, a novel terahertz (THz) extended interaction oscillator (EIO) is presented. Adopting PIC code , design and optimization geometry of EIO is performed, which is composed of ladder loaded rectangular waveguide. In present work, the operation center frequency of THz EIO is 105GHz , and the output power 673W is achieved, the efficiency reaches 12.1%, which is beam voltage and beam current is 14 kV and 0.4A , respectively.