Abstract
The optical modes in a free-electron laser are examined by following the evolution of the optical field envelope self-consistently over many passes. After normal saturation in strong optical fields, the oscillation of trapped electrons causes the laser to become unstable and create sidebands. In some cases the mixing of modes is highly non-linear, and the optical field spectrum becomes broadband and chaotic.© (1984) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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