Title :
Measurement of the temporal and spatial phase variations of a pulsed free electron laser amplifier
Author :
Volfbeyn, P. ; Ricci, K. ; Chen, B. ; Bekefi, G.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
fDate :
10/1/1994 12:00:00 AM
Abstract :
We report temporal and spatial phase measurements of a pulsed free electron laser amplifier (FEL) operating in combined wiggler and axial guide magnetic fields. The system uses a mildly relativistic electron beam (750 kV, 90-300 A, 30 ns), and is excited by a high power 33.39 GHz magnetron source. The phase during the voltage pulse is measured by an interferometric technique from which frequency chirping is determined
Keywords :
chirp modulation; free electron lasers; laser variables measurement; light interferometry; phase measurement; 30 ns; 33.39 GHz; 750 kV; 90 to 300 A; axial guide magnetic field; combined fields; free electron laser; frequency chirping; high power EHF magnetron source; interferometric technique; mildly relativistic electron beam; phase measurements; pulsed FEL amplifier; spatial phase variations; temporal phase variations; voltage pulse; wiggler field; Electron beams; Free electron lasers; Laser excitation; Magnetic field measurement; Optical pulses; Phase measurement; Pulse amplifiers; Pulse measurements; Undulators; Voltage;
Journal_Title :
Plasma Science, IEEE Transactions on
