A free-electron laser amplifier with a spatially varying wiggler |
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Affiliation: | 1. Department of Physics, Lovely Professional University, G.T. Road, Phagwara, Punjab 144411, India;2. Department of Physics, Manav Rachna University, Faridabad, Haryana, India |
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Abstract: | We discuss the dynamics of the free-electron laser in the high gain Compton regime with a linearly decreasing wiggler wave-length, and give evidence for the possibility of a much greater amplification of an input signal with the selected wiggler geometry over the more traditional uniform wiggler configuration. In addition, our numerical results suggest the existence of an interesting transition in the FEL dynamical evolution. |
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