Modelling of free-electron maser based on two-dimensional distributed feedback

Author

Konoplev, I.V. ; Phelps, A.D.R. ; Cross, A.W. ; Maclnnes, P.

Author_Institution

Univ. of Strathclyde, Glasgow

fYear

2007

fDate

2-9 Sept. 2007

Firstpage

839

Lastpage

840

Abstract

The use of two-dimensional (2D) distributed feedback has been considered as a method of providing spatially coherent radiation from an oversized annular electron beam used to drive a FEM based on a coaxial two-mirror cavity. The operation of the FEM when the interaction space is formed by a 2D Bragg input and a 1D Bragg output mirror separated by a regular section of the coaxial waveguide has been studied using the 3D particle-in-cell code MAGIC. The properties of the FEM are analyzed and discussed. The single mode operation of the FEM that uses a coaxial cavity is demonstrated and the design of a 2D Bragg FEM-oscillator based on a high-current accelerator is discussed.

Keywords

coaxial waveguides; distributed Bragg reflector lasers; finite element analysis; masers; 1D Bragg output mirror; 2D Bragg input mirror; 3D particle-in-cell code; FEM; coaxial two-mirror cavity; coaxial waveguide; coherent radiation; free-electron maser modelling; oversized annular electron beam; two-dimensional distributed feedback; Coaxial components; Distributed feedback devices; Electron beams; IEEE members; Masers; Mirrors; Numerical simulation; Solenoids; Undulators; Wire; Distributed Bragg; Distributed feedback oscillators; Free electron masers; Numerical; reflectors; simulations;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on

Conference_Location

Cardiff

Print_ISBN

978-1-4244-1438-3

Type

conf

DOI

10.1109/ICIMW.2007.4516756

Filename

4516756