Superradiant and stimulated superradiant emission in a prebunched beam free-electron maser.
An electron beam, prebunched at the synchronous free-electron laser frequency and passing through a magnetic undulator, emits coherent (superradiant) synchrotron undulator radiation at the bunching frequency. If an external electromagnetic wave is introduced into the interaction region, at the same frequency and at a proper phase, the radiation process will be stimulated (stimulated prebunched beam radiation). We report first experimental measurements of stimulated superradiant emission in a prebunched free-electron maser. Measurements are in good agreement with theory.
Arbel
M
M
Department of Physical Electronics, Tel-Aviv University, Israel.
Abramovich
A
A
Eichenbaum
A L
AL
Gover
A
A
Kleinman
H
H
Pinhasi
Y
Y
Yakover
I M
IM