Simulation Codes For Modeling Free-Electron Laser Oscillators

J. C. Goldstein; B. D. McVey; R. L. Tokar; C. J. Elliott; M. J. Schmitt; B. E. Carlsten; L. E. Thode

doi:10.1117/12.951307

31 May 1989 Simulation Codes For Modeling Free-Electron Laser Oscillators

J. C. Goldstein, B. D. McVey, R. L. Tokar, C. J. Elliott, M. J. Schmitt, B. E. Carlsten, L. E. Thode

Proceedings Volume 1045, Modeling and Simulation of Laser Systems; (1989) https://doi.org/10.1117/12.951307
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

This paper reviews the basic characteristics of free-electron laser (FEL) oscillators and describes a group of codes that have been developed to analyze and design rf-linac-driven FELs. The optical performance of an FEL has been treated using 1-D time-dependent (finite pulse) codes that describe the characteristics of the optical temporal pulse shape and spectrum during the evolution of the oscillator from low-intensity small-signal gain conditions to high-intensity large-signal gain conditions. These codes can include frequency-dependent elements, such as narrow-band filters or grating rhombs. Diffraction effects, transverse optical and electron-beam mode properties, misalignments, as well as aberrations on optical elements are modeled with the 3-D code FELEX. This code has now been extended to include the effects of imperfections in the wiggler magnetic field and light emission at higher optical harmonics. A separate accelerator modeling capability allows the use of a numerically-generated electron pulse in FELEX for 3-D integrated numerical FEL simulations.

Citation Download Citation

J. C. Goldstein, B. D. McVey, R. L. Tokar, C. J. Elliott, M. J. Schmitt, B. E. Carlsten, and L. E. Thode "Simulation Codes For Modeling Free-Electron Laser Oscillators", Proc. SPIE 1045, Modeling and Simulation of Laser Systems, (31 May 1989); https://doi.org/10.1117/12.951307

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