An upper limit to the gain-energy acceptance product of the free electron laser
Abstract
It is shown that the gain-energy acceptance product of the uniform wiggler FEL is a maximum with respect to variations in phase shift or dispersion along the length, and that any additional phase shift or dispersion cannot increase this product. For example, in the case of an optical klystron, the gain is increased by introducing a dispersive section, but the gain-energy acceptance product falls to less than that of the uniform wiggler FEL.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- June 1986
- DOI:
- 10.1109/JQE.1986.1073059
- Bibcode:
- 1986IJQE...22..789G
- Keywords:
-
- Free Electron Lasers;
- Klystrons;
- Laser Outputs;
- Light Amplifiers;
- Phase Shift;
- Wiggler Magnets;
- Amplification;
- Bandwidth;
- Electric Fields;
- Electron Beams;
- Energy Conservation;
- Lasers and Masers