Free electron laser using a relativistic beam with spiralling electron
Patent
·
OSTI ID:5774206
A method is described for generating continuously tunable coherent radiation having wavelength in the millimeter and submillimeter range in a longitudinal drift tube comprising the steps of: generating a relativistic electron beam having a transverse velocity component and the corresponding longitudinal velocity component thereof along the axis of the drift tube so as to obtain a non-adiabatically compressed electron beam; converting the longitudinal velocity of the relativistic electron beam into a transverse velocity component thereof and produce a spiralling electron beam; subjecting the electron beam to a wiggler magnetic field having both longitudinal and transverse components thereof in the drift tube; and extracting coherent radiation generated as a result of interaction between the electron beam and the wiggler magnetic field in the drift tube.
- Assignee:
- Secretary of the Navy, Washington, DC
- Patent Number(s):
- US 4825441
- OSTI ID:
- 5774206
- Country of Publication:
- United States
- Language:
- English
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