Compact Tuneable Terahertz Source

It has recently been proposed that a folded waveguide travelling wave tube could be constructed using silicon microfabrication technology. When configured as an oscillator this device could provide a high power (>100mW), highly efficient (>15%), reliable, compact and cheap source for the terahertz gap. This paper presents the current status of Liverpool John Moores University THz source. This includes theoretical and numerical simulations of the electron beam interaction with the electromagnetic waves (EM) and the design and construction of the EM wave interaction cavity. This research project is supported by the UK EMRS/DTC