Free electron laser short pulse simulation and two-mode sideband analysis
Cord, Gregory A.
Neighbours, John R.
MetadataShow full item record
The Stanford Free Electron Laser (FEL), like many FELs is driven by extremely short electron pulses which drive equally short optical pulses. Simulations of the Stanford FEL describe the trapped-particle instability leading to sideband frequencies and limit-cycle behavior. Comparisons are made of recent experimental results that show close agreement between the desynchronism curves, optical spectra, and the electron spectra. The second part of this thesis analyzes sideband behavior when two modes are present in an FEL oscillator. Using two-mode wave and pendulum equations derived from Maxwell's and the Lorentz force equations, the gain and phase shift for each initial phase of the two-mode optical field can be determined numerically. Averaging over all initial phases determines the FEL optical performance. In steady-state the presence of the sideband effectively reduces the undulator's length, delaying the onset of saturation. This allows more power to be generated in the optical field then possible with only a single mode.
Showing items related by title, author, creator and subject.
Kiel, David H. (Monterey, California. Naval Postgraduate School, 1990-12);The dynamics of the Free Electron Laser are governed by Maxwell's equations which causes many highly nonlinear regimes to exist in Free Electron Laser Physics. This thesis will examine two such areas and develop simple ...
Very low frequency signals and whistler-mode amplification in the magnetosphere and limit-cycle behavior in the CEBAF infrared free electron laser Caudle, Daryl L. (Monterey, California. Naval Postgraduate School, 1992-12);Very low frequency (VLF) electromagnetic wave injections experiments were conducted on 23-24 January 1988 from a 42-km horizontal dipole antenna located at Siple Station, Antarctica. The experiment consisted of a diagnostic ...
Feit, Harry H. (Monterey, California: U.S. Naval Postgraduate School, 1960);The purpose of this paper is to present a communications system which uses a combination of single and double- sideband techniques. Audio intelligence information is transmitted via single sideband and a single frequency ...