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Leemans, W.P.; Conde, M.E.; Govil, R.; van der Geer, B.; de Loos, M.; Schwettman, H.A.; Smith, T.I.; Swent, R.L.
Lawrence Berkeley Lab., CA (United States). Funding organisation: USDOE, Washington, DC (United States)1994
Lawrence Berkeley Lab., CA (United States). Funding organisation: USDOE, Washington, DC (United States)1994
AbstractAbstract
[en] We report observations on sideband generation and transition to chaos in an infrared Free Electron Laser operating at a wavelength λr of 4 μm with a low loss optical cavity. The temporal evolution of the radiation spectrum through the complete macropulse has been measured on a micropulse to micropulse basis. Stable sidebands are observed for small cavity detuning with frequency offsets in good agreement with calculations. For even smaller cavity detuning, self-oscillations occur with the main laser wavelength varying by up to 2%. Using a wavelength stabilization system based on RF feedback, we have suppressed these wavelength fluctuations without loss of peak power
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Aug 1994; 12 p; 16. international free electron laser conference; Stanford, CA (United States); 21-26 Aug 1994; CBP--102; CONF-9408146--10; CONTRACT AC03-76SF00098; Also available from OSTI as DE95002336; NTIS; US Govt. Printing Office Dep
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