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20 November 1985 Long-Base Free Electron Laser Resonant Cavity
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Proceedings Volume 0540, Southwest Conf on Optics '85; (1985)
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, S. Bender, Q. Appert, A. Saxman, and T. Swann "Long-Base Free Electron Laser Resonant Cavity", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985);


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