Observations of periodic intensity bursts during the start-up phase of a free-electron-laser oscillator

E. Jerby*, G. Bekefi, J. S. Wurtele

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Observations of periodic intensity bursts during the start-up phase of a free-electron-laser oscillator operating in the microwave regime are reported. The bursts are composed of radiation micropulses several nanoseconds wide and separated by the resonant-cavity round-trip time (35 ns). The occurrence of the bursts is correlated to random current spikes superposed on the continuous electron-beam current density. The observations are compared with theoretical results from an impulse response model of a free-electron laser.

Original languageEnglish
Pages (from-to)2068-2071
Number of pages4
JournalPhysical Review Letters
Volume66
Issue number16
DOIs
StatePublished - 1991
Externally publishedYes

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