Three-dimensional theory of free electron lasers with an axial guide field
Abstract
The collective interaction in a free electron laser with a combined helical wiggler and uniform axial guide field is presented in the low-gain regime. The wiggler model employed is fully self-consistent and includes all transvers inhomogeneities. The analysis is performed for a free electron laser (FEL) amplifier in which the radial dependence of the radiation is treated using both the TE and TM waveguide modes. Substantial discrepancies are found to exist between the results for the realizable and ideal wigglers, and a selection rule relating the TE(1n) and TM(1n) modes with resonant amplification at the lth harmonic of the FEL Doppler upshift.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- March 1983
- DOI:
- Bibcode:
- 1983IJQE...19..322F
- Keywords:
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- Electron Trajectories;
- Free Electron Lasers;
- Light Amplifiers;
- Magnetic Control;
- Three Dimensional Motion;
- Wiggler Magnets;
- Amplifier Design;
- Design Analysis;
- Doppler Effect;
- Energy Conversion Efficiency;
- Optical Waveguides;
- Propagation Modes;
- Self Consistent Fields;
- Lasers and Masers