Reducing slip in a far-infrared free-electron laser using a parallel-plane waveguide
- 24 September 1990
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 57 (13) , 1283-1285
- https://doi.org/10.1063/1.103460
Abstract
There are several interesting applications for a picosecond, far-infrared (100–1000 μ) free-electron laser. One obstacle to its development is the slip that occurs between the electron beam and the radiation. This can be reduced by operating the laser in a parallel-plane waveguide, and choosing the laser parameters and transverse guide dimension such that the group velocity of the wave nearly matches the axial velocity of the electrons. The laser wavelength depends on both the electron energy and the waveguide dimension, and the laser can be tuned by varying either. Both the tuning characteristics and the slip as a function of wavelength are different from those of a conventional free-electron laser.Keywords
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