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Characteristics of the dispersive free-electron laser

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3 Author(s)
T. Deloney ; Stanford University, Stanford, CA, USA ; J. Feinstein ; R. Pantell

The dispersive free-electron laser (DFEL) was previously introduced as an optical klystron (OK) superimposed upon a free-electron laser (FEL). In this paper it is shown that with proper design this device provides a gain increase of the order of 4 over the gain of the OK (for equal lengths) with a gain-energy acceptance product approaching that of the FEL. Even when the transverse excursion of the electron beam exceeds the optical beam dimension, there is only a slight reduction in gain from the above value.

Published in:

IEEE Journal of Quantum Electronics  (Volume:21 ,  Issue: 7 )