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A low‐power X‐band free electron laser by prebunching of the electrons
Author(s) -
Malek Fareq,
Lucas James,
Huang Yi
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25493
Subject(s) - microwave , cathode ray , resonator , electron gun , laser , optics , electron , free electron laser , beam (structure) , materials science , waveguide , optoelectronics , thermionic emission , x band , physics , quantum mechanics
We are developing a prototype free electron laser that is compact, low cost, and low power. The design, setup, and results of a novel X‐band rectangular waveguide prebunched free electron laser (PFEL) are presented in this article. Our initial device operates at 10 GHz and uses two rectangular waveguide cavities (one for velocity modulation and the other for energy extraction). The electron beam used in this experiment is produced by thermionic electron gun, which operates at 3 kV and up to 50 μA. The nominal beam diameter is 1 mm passing across the X‐band cavity resonators. The resonant cavity consists of a thin gap section of height 1.5 mm, which reduces the beam energy required for beam wave interaction. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2483–2486, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25493