Free-electron lasers and masers on curved paths
Abstract
The possibility of building free-electron lasers and masers with quasi-circular undulators is considered. The two-mirror cavity is replaced by a suitable waveguide. The magnetic field along the orbit has a continuous component superimposed on the alternating one. Besides allowing large freedom for electron guiding and focusing, the structure allows effective negative mass conditions, which may enhance the electron beam modulation when space charge effect are important. Furthermore the radiation frequency can be higher than that in a linear undulator with the same electron energy, and long interaction times are possible in a compact structure.
- Publication:
-
Applied Physics
- Pub Date:
- May 1979
- DOI:
- Bibcode:
- 1979ApPhy..19...47B
- Keywords:
-
- Electron Trajectories;
- Free Electrons;
- High Energy Electrons;
- Laser Outputs;
- Maser Outputs;
- Electron Accelerators;
- Energy Conversion Efficiency;
- Focusing;
- Laser Cavities;
- Light Modulation;
- Ring Lasers;
- Space Charge;
- Lasers and Masers;
- PACS 42.55 - 42.80;
- 42.55;
- 42.80