Title :
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
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;
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
DOI :
10.1109/ICIMW.2007.4516756
