Short Wavelength Free Electron Laser Using Low Energy Electrons.
Patent, Filed 26 Jan 81, patented 20 Mar 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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This patent discloses method and apparatus for constructing a continuous wave CW free electron laser FEL system capable of providing tunable high power laser radiation at short wavelengths using low-energy recirculating DC electron beams. This method replaces the static periodic magnetic field used in conventional FEL systems with an equivalently intense and continuous electromagnetic pump field having spatial periodicity less than 1 cm. The pump field is generated by a low-energy recirculated DC electron beam interacting with a transverse static periodic magnetic field.
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