Effect of electron beam temperature on the gain of a collective free-electron laser
Abstract
At sufficiently low beam currents, electron beam temperature effects cause the gains of collective (Raman) regime free-electron lasers to be lower than the predictions of cold beam theory. This gain degradation has been measured as a function of the beam current, the wiggler magnetic field, and the interaction frequency. The measurements are used to estimate the electron beam temperature, and the estimated temperature is close to the temperature predicted by numeric simulations.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- September 1987
- DOI:
- 10.1109/JQE.1987.1073543
- Bibcode:
- 1987IJQE...23.1617F
- Keywords:
-
- Electron Beams;
- Free Electron Lasers;
- Power Gain;
- Temperature Effects;
- Raman Lasers;
- Wiggler Magnets;
- Lasers and Masers