Title :
The interaction of high- and low-frequency waves in a free electron laser
Author :
Latham, Peter E. ; Levush, Baruch
Author_Institution :
Lab. for Plasma Res., Maryland Univ., College Park, MD, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
When a free electron laser (FEL) interaction occurs inside a waveguide, there are two possible operating frequencies at the two intersections of the beam line with the waveguide dispersion curve. Using a one-dimensional model valid for a low-gain oscillator, the mode competition between the high- and low-frequency waves is studied. It is found that the low-frequency wave can be nonlinearly suppressed, even when its linear growth rate is positive. When the frequency ratio is two, phase locking occurs and the nonlinear gain of the low-frequency wave can exceed its linear growth rate
Keywords :
free electron lasers; laser mode locking; laser modes; masers; waveguides; free electron laser; high-frequency waves; interaction; linear growth rate; low-frequency wave; low-frequency waves; microwave generation; mode competition; nonlinear gain; one-dimensional model; phase locking; waveguide dispersion curve; Electron beams; Free electron lasers; Frequency; Laser beams; Laser mode locking; Laser modes; Oscillators; Plasma waves; Q factor; Waveguide lasers;
Journal_Title :
Plasma Science, IEEE Transactions on
