THREE-DIMENSIONAL NUMERICAL SIMULATION OF FREE ELECTRON LASER OSCILLATOR

In this paper,we presented physical equations of FEL oscillator and initial-value and boundary-value conditions of those equations. We examined carefully the reliability of 3-I code correspondent those equations. Under same axis condition between electron beam and optical beam, we computed and analyzed some of basic problems of FEL by 3-I code when changed electron beam parameters such as energy spread, emittance and current.