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 language | English |
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Pages (from-to) | 2068-2071 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 66 |
Issue number | 16 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |