Title :
Suppression of feedback oscillations in free-electron lasers
Author :
Fajans, J. ; Wurtele, J.S.
Author_Institution :
Dept. of Phys., California Univ., La Jolla, CA, USA
Abstract :
The suppression of feedback oscillations in a free-electron laser (FEL) oscillator has been investigated. It is found, through numerical simulation that a narrow attenuating strip inserted in a waveguide will not reduce FEL performance at the desired frequency and will attenuate feedback oscillations. Simulations are presented for a 5-mm-wavelength FEL with a 40-dB attenuator inserted in the interaction region.<>
Keywords :
feedback; free electron lasers; 5 mm; FEL; feedback oscillations; free-electron lasers; waveguide; Attenuators; Couplers; Electron beams; Free electron lasers; Frequency; High power amplifiers; Laser feedback; Millimeter wave technology; Output feedback; Undulators;
Journal_Title :
Quantum Electronics, IEEE Journal of
