Unstable Resonators For The Free-Electron Laser

Gerald T. Moore

doi:10.1117/12.947104

16 February 1984 Unstable Resonators For The Free-Electron Laser

Gerald T. Moore

Proceedings Volume 0453, Free-Electron Generators of Coherent Radiation; (1984) https://doi.org/10.1117/12.947104
Event: Free-Electron Generators of Coherent Radiation, 1983, Orcas Island, United States

Abstract

Axisymmetric cw multi-pass diffractive numerical calculations for the free-electron laser (FEL) are presented. The output is extracted around the edge of one mirror in a symmetric resonator of low Fresnel number. Excellent beam quality and small mode area inside the wiggler are obtained when the resonator is in a negative-branch unstable configuration. We suggest the use of a deformable mirror for gain-switching a tapered-wiggler FEL.

Citation Download Citation

Gerald T. Moore "Unstable Resonators For The Free-Electron Laser", Proc. SPIE 0453, Free-Electron Generators of Coherent Radiation, (16 February 1984); https://doi.org/10.1117/12.947104

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