20 November 1985 Long-Base Free Electron Laser Resonant Cavity
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Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976119
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States
A 65-meter resonant cavity has been constructed in order to experimentally determine the characteristics of long resonant cavities as would be required for a free electron laser1 (FEL). A version using normal incidence mirrors is reported here, and another that includes a grazing incidence mirror is forthcoming. Either version is designed to simulate a FEL operating at 0.5 micron wavelength and is near-concentric with a stability parameter of 0.98. Argon-ion plasma tubes simulate the laser gain that would be provided by a wiggler in an actual FEL. The cavity was constructed on a seismic slab and air turbulence effects were reduced by surrounding the beam with helium in 6" diameter tubes. AlignTept sensitivities are reported and compared to geometrical and diffraction predic-tions3' with good agreement.
© (1985) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Miller, E. Miller, S. Bender, S. Bender, Q. Appert, Q. Appert, A. Saxman, A. Saxman, T. Swann, T. Swann, "Long-Base Free Electron Laser Resonant Cavity", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976119; https://doi.org/10.1117/12.976119


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