The primary constituents of a 0.22-terahertz (THz) sheet-beam traveling-wave tube (TWT)
amplifier, composed of a staggered double grating array waveguide, have been designed …

High power vacuum electronic devices of millimeter wave to terahertz regime are attracting
extensive interests due to their potential applications in science and technologies. In this …

Extensive numerical analysis has demonstrated that a terahertz (H-band) sheet beam
traveling-wave tube (TWT) amplifier circuit, composed of a staggered double grating array …

This paper introduces a self-developed, three-dimensional parallel fully electromagnetic
particle simulation code UNIPIC-3D. In this code, the electromagnetic fields are updated …

Within the framework of a quasi-optical approach, the nonlinear theory of relativistic surface-
wave oscillators is developed. By presenting the radiation field as a sum of two counter …

A design study for a high-power, high-efficiency, high-growth-rate wideband traveling wave
tube (TWT) in W-band using a staggered double-vane slow-wave structure (SWS) combined …

To increase the generation efficiency of the terahertz wave in the Y band, the idea of dual-
reflector is introduced in the relativistic surface wave oscillator (SWO) with large oversized …

A klystron-like relativistic backward wave oscillator with a ratio of transverse dimension to
free-space wavelength being about four is presented. In the beam-wave interaction region …

Preliminary experimental results of a repetitive 0.14 THz overmoded relativistic surface wave
oscillator (RSWO) are presented in this paper. The repetitive RSWO is developed by using a …

The nonlinear interaction of Hermite-Gaussian and Laguerre-Gaussian (LG) laser beams
with a collisional inhomogeneous plasma is studied, and the amplitude of the emitted …