Design and analysis of a quasi-TM03 mode G-band extended interaction radiation source
Source abstract
Abstract
A disk-loaded coupled cavity structure operating in the quasi-TM03 mode has been used here to develop a high electron efficiency, high output power terahertz radiation source, demonstrating that it is possible to concentrate the axial field energy along the source’s central axis within a large cavity. Compared with traditional extended interaction devices operating at the same frequency band, the operating mode of this present device provides a sizable beam tunnel capacity that can support efficient energy conversion between the electron beam and the high frequency field. The developed electron optical system is based on a cylindrical electron beam of 0.3 mm radius and is capable of producing a beam current of 0.65 A at a bias of 16.4 kV. Particle in cell simulations show that such new design approaches can achieve kilowatt-level output power at 0.22 THz with a high electron efficiency of 11.5%.
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Research context
OpenAlex topics: Gyrotron and Vacuum Electronics Research · Terahertz technology and applications · Superconducting and THz Device Technology
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054, China
Department of Electronic and Electrical Engineering, University of Bath 2 , North Road, Bath BA2 7AY, United Kingdom
Funding
Nation Key Research and Development Program of China · National Natural Science Foundation of China · Sichuan Science and Technology Program · Fundamental Research Funds for the Central Universities
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