Limit-cycle behavior in free electron lasers
Mabe, Roger M.
Armstead, Robert L.
MetadataShow full item record
Many Free Electron Lasers (FEL) are driven by short electron pulses which create equally short optical pulses. At saturation, the strong optical fields present in the undulator result in the trapped particle instability which drives the carrier wave unstable and modulates the optical pulse. The trapped particle instability coupled with the short optical pulses can result in periodic oscillations of the pulse shape. This results in oscillations of the output power even though all input parameters are constant. The effect is known as limit cycle behavior. The character of the oscillation is highly nonlinear and is dependent on the physical input parameters of the current density, resonator losses, electron pulse length, and desynchronism of the resonator cavity. These power oscillations affect the operation of the FEL requiring better insight into their cause and control. Using simulations based on a self consistent Maxwell Lorentz theory of FEL operation, the dependence of the limit cycle oscillations on these physical parameters is examined.
Showing items related by title, author, creator and subject.
Numerical Determination of the Parity-Condition Parameter for Lanchester-Type Equations of Modern Warfare Brown, Gerald G.; Taylor, James G. (1978);This paper presents a simple numerical procedure for determining the parity-condition parameter for deterministic Lanchester-type combat between two homogeneous forces. Deterministic dierentidequation combat models are ...
Colton, Marie C. (Monterey, California. Naval Postgraduate School, 1989-12);The Normalized Radar Cross-Section (NRCS), the fundamental measurement made by radar scatterometers, was obtained as part of the Water-Air Vertical Exchanges 1987 (WAVES87) experiment. The experiment was designed to ...
Numerical determination of the parity-condition parameter for Lanchester-type equations of modern warfare Taylor, James G.; Brown, Gerald Gerard (Monterey, California. Naval Postgraduate School, 1977-03); NPS55-77-10This paper presents a simple numerical procedure for determining the parity-condition parameter for Lanchester-type combat between two homogeneous forces. The combat studied is modeled by Lanchester-type equations of modern ...