TY - JOUR
T1 - Optical spikes in a free electron laser
T2 - theory and experiment
AU - Bhattacharjee, A.
AU - Cai, S. Y.
AU - Dodd, J. W.
AU - Marshall, T. C.
N1 - Funding Information:
This work is supported by the Office of Naval Research, Grant no. N0014-89-J-1652 and the National Science Foundation, Grant no. ECS-89-122581.
PY - 1991/7/1
Y1 - 1991/7/1
N2 - It is shown that the nonlinear dynamics of the radiation field in a free electron laser (FEL) can be modeled by the Ginzburg-Landau equation. The refractive index of the electron beam in the nonlinear regime and the saturation intensity of the radiation field is obtained from a WKB theory. Though the Ginzburg-Landau equation does not permit soliton solutions, it is shown that certain types of solitary wave solutions bear a strong resemblance to spikes observed in simulations and experiments. In particular, we describe experiments on spikes in the Columbia FEL facility.
AB - It is shown that the nonlinear dynamics of the radiation field in a free electron laser (FEL) can be modeled by the Ginzburg-Landau equation. The refractive index of the electron beam in the nonlinear regime and the saturation intensity of the radiation field is obtained from a WKB theory. Though the Ginzburg-Landau equation does not permit soliton solutions, it is shown that certain types of solitary wave solutions bear a strong resemblance to spikes observed in simulations and experiments. In particular, we describe experiments on spikes in the Columbia FEL facility.
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U2 - 10.1016/0168-9002(91)90828-E
DO - 10.1016/0168-9002(91)90828-E
M3 - Article
AN - SCOPUS:0012813171
SN - 0168-9002
VL - 304
SP - 99
EP - 103
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 1-3
ER -