Patent ID: 6970483
Filing Date: 2005-11-29
Classification: H01S,H05H

Abstract:
1. A free-electron laser for realizing high extraction efficiency of laser light from electron beams, which comprises a series connection of an electron gun, a superconducting or normal conducting electron linear accelerator and deflecting electromagnets, one of said deflecting electromagnets having an outlet for discarding electron beams and an optical resonator being coupled externally such that a mirror is positioned at each end of an undulator, wherein electron pulses are generated from said electron gun, accelerated with said accelerator and introduced into the optical resonator to generate laser light, which is reflected back and forth between the mirrors, whereupon the quantum fluctuation in the electron bunches in said undulator caused in the optical pulses stored in the resonator sustains oscillation of laser light from the initial state of lasing to the saturated state where the generation of high power is sustained.