Abstract
We have produced and analyzed self-amplified spontaneous emission emitted by a relativistic electron beam passing through an undulator for the first time in the mid-infrared. The spectral behavior of the line exhibits an unexpected growth at the start-up of the process.
- Received 7 November 1996
DOI:https://doi.org/10.1103/PhysRevLett.78.2124
©1997 American Physical Society