A novel relativistic quantum theory of the free-electron laser is formulated using the Dirac equation. It is shown that the theory has the correct classical limit. It is predicted that for two-stage free-electron lasers, quantum noise can be comparable to the classical noise due to the thermal spread of the beam or the random initial distribution of electrons in phase.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review A|
|State||Published - 1988|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics