A general theory of the Ramantype freeelectron laser
Abstract
A theoretical consideration is given for the stimulated Raman scattering by a relativistic electron beam uniformly magnetized with finite magnitude in the direction of its motion, assuming an intense electromagnetic wave for the pumping source. With the aid of analytical and numerical approaches, special attention is paid to the behavior of the scattered wave in the vicinity of electron cyclotron resonance. The interesting results obtained by the cyclotron resonance are summarized as follows. First, according to the conditions imposed on the pump wave, the scattered wave becomes either the electromagnetic wave mode or the electron cyclotron wave mode, or it is not excited. In addition, in the presence of a finite static magnetic field, the spatial growth rate for the electromagnetic scattered wave takes a maximum value for a particular set of various parameters, and the maximum growth rate becomes one order of magnitude or more (about 20 times in the specific numerical examples illustrated) as large as the growth rate for the case with no static magnetic field applied.
 Publication:

Electronics Communications of Japan
 Pub Date:
 June 1982
 Bibcode:
 1982JElCo..65...89S
 Keywords:

 Electromagnetic Scattering;
 Free Electron Lasers;
 Light Scattering;
 Raman Lasers;
 Relativistic Electron Beams;
 Tunable Lasers;
 Cyclotron Resonance;
 Far Infrared Radiation;
 High Power Lasers;
 Infrared Lasers;
 Laser Modes;
 Lasing;
 Magnetic Fields;
 Submillimeter Waves;
 Lasers and Masers