Terahertz traveling wave tube ultra-wideband quasi-light output system and manufacturing method thereof

The invention discloses a terahertz traveling wave tube ultra-wideband quasi-light output system and a manufacturing method thereof. A Gaussian horn is used to convert a waveguide mode into a Gaussianmode, to realize long-distance low-loss transmission and high-efficiency coupling of free space. A Brewster output window is used to overcomes a characteristic of a traditional box-type output windowof low bandwidth, and vacuum sealing is realized, and broadband output is ensured. A traditional system device processing mode is abandoned, and the system integrally processes molding, thereby greatly reducing transmission loss caused by flange connection gap and structural irregularity caused by welding. a processing loading table is used in the system, and a groove of a window piece is processed on the loading table. In welding, force of the window piece is uniform, and possibility of cracking of the window piece caused by force is greatly reduced, and transmission loss caused by deformation of the window piece due