A terahertz traveling wave tube ultra-broadband quasi-light output system and its preparation method

Abstract

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 to force is reduced. The system can realize ultra-wideband output of electromagnetic waves in a terahertz band and has good vacuum sealing performance.

Description

technical field [0001] The invention relates to the field of ultra-broadband vacuum electronic devices, in particular to a terahertz traveling wave tube ultra-broadband quasi-light output system and a preparation method thereof. Background technique [0002] Terahertz wave is an electromagnetic wave band between microwave and light wave that has not been deeply studied, and its oscillation frequency is between 0.1 and 10THz (1THz=10 12 Hz), due to the non-ionizing, high-penetrating and high-resolution characteristics of terahertz waves, it has great applications in the fields of nuclear fusion science, human body detection, biological imaging, radar detection and wireless communication. potential. Among them, terahertz communication can provide a transmission rate of up to 10Gb / s, making it one of the extremely important application fields and research directions of terahertz science and technology. Ultra-high-speed terahertz wireless communication requires the support of ...

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Problems solved by technology

[0005] In order to realize the ultra-wideband output of the TWT output system, especially to solve the limitation of the box window on the output bandwidth and the coupling problem between the waveguide mode and the free space mode, and to solve the problem that the structure size of the terahertz device is small and difficult to process, The invention proposes a terahertz traveling wave tube ultra-broadband quasi-light output system and its preparation method, which provides a new research idea and research method for the output field of traveling wave tubes and even the output field of the entire vacuum electronic device

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