Title :
Demonstration of a new free-electron laser harmonic interaction
Author :
Bluem, H. ; Jackson, R.H. ; Freund, H.P. ; Pershing, D.E. ; Granatstein, V.L.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
Abstract :
The first experimental demonstration of a harmonic free-electron laser amplifier utilizing a periodic position instability is described for a planar wiggler configuration. The interaction occurs at the even harmonics of the fundamental. A maximum gain of 7 dB was observed over a frequency band ranging from 14 to 15 GHz. The experimental results are compared with predictions from the three-dimensional simulation code WIGGLIN with excellent agreement. Improvements due to a tapered wiggler for this interaction are discussed.<>
Keywords :
free electron lasers; harmonic generation; wigglers; 14 to 15 GHz; 7 dB; WIGGLIN; free-electron laser harmonic interaction; frequency band; harmonic free-electron laser amplifier; maximum gain; periodic position instability; planar wiggler configuration; tapered wiggler; three-dimensional simulation code; Acceleration; Electron beams; Free electron lasers; Frequency; Laboratories; Laser beams; Laser theory; Particle beams; Undulators; Voltage;
Conference_Titel :
Electron Devices Meeting, 1991. IEDM '91. Technical Digest., International
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-0243-5
DOI :
10.1109/IEDM.1991.235305
