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Self-amplified coherent spontaneous emission in the planar wiggler free-electron laser

McNeil, B.W.J. and Robb, G.R.M. (2002) Self-amplified coherent spontaneous emission in the planar wiggler free-electron laser. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 65 (4). 046503-1. ISSN 1063-651X

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Abstract

Coherent spontaneous emission (CSE) is a potentially important self-generated source of seed radiation in a free-electron laser (FEL) amplifier. A model is derived that describes CSE at the fundamental resonant frequency and its harmonics in a planar wiggler FEL. The subsequent self-amplification of the CSE is investigated in the nonlinear regime for a FEL amplifier configuration.